Rework header bar on issue, pull requests and milestone (#24420)

- Make search bar dynamic full width via flexbox
- Make all buttons `small` so font size is the same for all elements in
the header
- Remove primary color from search field, add SVG icon like on Code tab
- Fix button vertical padding being enlarged by SVG icons

[View diff without
whitespace](https://github.com/go-gitea/gitea/pull/24420/files?diff=unified&w=1)

<img width="1226" alt="Screenshot 2023-04-29 at 11 58 53"
src="https://user-images.githubusercontent.com/115237/235296851-74848267-664f-4c1f-b94c-a1b94196ff75.png">
<img width="1219" alt="Screenshot 2023-04-29 at 11 59 39"
src="https://user-images.githubusercontent.com/115237/235296852-bcfde5ed-8658-43c2-b7e5-3ad84611e76f.png">

Mobile:
<img width="437" alt="Screenshot 2023-04-29 at 11 59 52"
src="https://user-images.githubusercontent.com/115237/235296860-99263373-7b27-4540-868c-a93e70f281ca.png">
<img width="433" alt="Screenshot 2023-04-29 at 12 00 00"
src="https://user-images.githubusercontent.com/115237/235296862-6cf64317-a864-405a-a00f-b5ab620349f5.png">

3 files changed, 76 insertions, 88 deletions

diff --git a/templates/user/dashboard/issues.tmpl b/templates/user/dashboard/issues.tmpl
index 5a207aac60..da7867a225 100644
--- a/templates/user/dashboard/issues.tmpl
+++ b/templates/user/dashboard/issues.tmpl
@@ -60,57 +60,51 @@
 				</div>
 			</div>
 			<div class="twelve wide column content">
-				<div class="ui three column stackable grid">
-					<div class="column">
-						<div class="ui compact tiny menu">
-							<a class="item{{if not .IsShowClosed}} active{{end}}" href="{{.Link}}?type={{$.ViewType}}&repos=[{{range $.RepoIDs}}{{.}}%2C{{end}}]&sort={{$.SortType}}&state=open&q={{$.Keyword}}">
-								{{svg "octicon-issue-opened" 16 "gt-mr-3"}}
-								{{.locale.PrettyNumber .IssueStats.OpenCount}}&nbsp;{{.locale.Tr "repo.issues.open_title"}}
-							</a>
-							<a class="item{{if .IsShowClosed}} active{{end}}" href="{{.Link}}?type={{$.ViewType}}&repos=[{{range $.RepoIDs}}{{.}}%2C{{end}}]&sort={{$.SortType}}&state=closed&q={{$.Keyword}}">
-								{{svg "octicon-issue-closed" 16 "gt-mr-3"}}
-								{{.locale.PrettyNumber .IssueStats.ClosedCount}}&nbsp;{{.locale.Tr "repo.issues.closed_title"}}
-							</a>
-						</div>
-					</div>
-					<div class="column center aligned">
-						<form class="ui form ignore-dirty">
-							<div class="ui search fluid action input">
-								<input type="hidden" name="type" value="{{$.ViewType}}">
-								<input type="hidden" name="repos" value="[{{range $.RepoIDs}}{{.}}%2C{{end}}]">
-								<input type="hidden" name="sort" value="{{$.SortType}}">
-								<input type="hidden" name="state" value="{{$.State}}">
-								<input name="q" value="{{$.Keyword}}" placeholder="{{.locale.Tr "explore.search"}}...">
-								<button class="ui primary button" type="submit">{{.locale.Tr "explore.search"}}</button>
-							</div>
-						</form>
+				<div class="list-header">
+					<div class="small-pill-buttons ui compact tiny menu">
+						<a class="item{{if not .IsShowClosed}} active{{end}}" href="{{.Link}}?type={{$.ViewType}}&repos=[{{range $.RepoIDs}}{{.}}%2C{{end}}]&sort={{$.SortType}}&state=open&q={{$.Keyword}}">
+							{{svg "octicon-issue-opened" 16 "gt-mr-3"}}
+							{{.locale.PrettyNumber .IssueStats.OpenCount}}&nbsp;{{.locale.Tr "repo.issues.open_title"}}
+						</a>
+						<a class="item{{if .IsShowClosed}} active{{end}}" href="{{.Link}}?type={{$.ViewType}}&repos=[{{range $.RepoIDs}}{{.}}%2C{{end}}]&sort={{$.SortType}}&state=closed&q={{$.Keyword}}">
+							{{svg "octicon-issue-closed" 16 "gt-mr-3"}}
+							{{.locale.PrettyNumber .IssueStats.ClosedCount}}&nbsp;{{.locale.Tr "repo.issues.closed_title"}}
+						</a>
 					</div>
-					<div class="column right aligned gt-df gt-ac gt-je">
-						<!-- Sort -->
-						<div class="ui dropdown type jump item">
-							<span class="text gt-whitespace-nowrap">
-								{{.locale.Tr "repo.issues.filter_sort"}}
-								{{svg "octicon-triangle-down" 14 "dropdown icon"}}
-							</span>
-							<div class="menu">
-								<a class="{{if eq .SortType "recentupdate"}}active {{end}}item" href="{{$.Link}}?type={{$.ViewType}}&repos=[{{range $.RepoIDs}}{{.}}%2C{{end}}]&sort=recentupdate&state={{$.State}}&q={{$.Keyword}}">{{.locale.Tr "repo.issues.filter_sort.recentupdate"}}</a>
-								<a class="{{if eq .SortType "leastupdate"}}active {{end}}item" href="{{$.Link}}?type={{$.ViewType}}&repos=[{{range $.RepoIDs}}{{.}}%2C{{end}}]&sort=leastupdate&state={{$.State}}&q={{$.Keyword}}">{{.locale.Tr "repo.issues.filter_sort.leastupdate"}}</a>
-								<a class="{{if or (eq .SortType "latest") (not .SortType)}}active {{end}}item" href="{{$.Link}}?type={{$.ViewType}}&repos=[{{range $.RepoIDs}}{{.}}%2C{{end}}]&sort=latest&state={{$.State}}&q={{$.Keyword}}">{{.locale.Tr "repo.issues.filter_sort.latest"}}</a>
-								<a class="{{if eq .SortType "oldest"}}active {{end}}item" href="{{$.Link}}?type={{$.ViewType}}&repos=[{{range $.RepoIDs}}{{.}}%2C{{end}}]&sort=oldest&state={{$.State}}&q={{$.Keyword}}">{{.locale.Tr "repo.issues.filter_sort.oldest"}}</a>
-								<a class="{{if eq .SortType "mostcomment"}}active {{end}}item" href="{{$.Link}}?type={{$.ViewType}}&repos=[{{range $.RepoIDs}}{{.}}%2C{{end}}]&sort=mostcomment&state={{$.State}}&q={{$.Keyword}}">{{.locale.Tr "repo.issues.filter_sort.mostcomment"}}</a>
-								<a class="{{if eq .SortType "leastcomment"}}active {{end}}item" href="{{$.Link}}?type={{$.ViewType}}&repos=[{{range $.RepoIDs}}{{.}}%2C{{end}}]&sort=leastcomment&state={{$.State}}&q={{$.Keyword}}">{{.locale.Tr "repo.issues.filter_sort.leastcomment"}}</a>
-								<a class="{{if eq .SortType "nearduedate"}}active {{end}}item" href="{{$.Link}}?type={{$.ViewType}}&repos=[{{range $.RepoIDs}}{{.}}%2C{{end}}]&sort=nearduedate&state={{$.State}}&q={{$.Keyword}}">{{.locale.Tr "repo.issues.filter_sort.nearduedate"}}</a>
-								<a class="{{if eq .SortType "farduedate"}}active {{end}}item" href="{{$.Link}}?type={{$.ViewType}}&repos=[{{range $.RepoIDs}}{{.}}%2C{{end}}]&sort=farduedate&state={{$.State}}&q={{$.Keyword}}">{{.locale.Tr "repo.issues.filter_sort.farduedate"}}</a>
-							</div>
+					<form class="list-header-search ui form ignore-dirty">
+						<div class="ui small search fluid action input">
+							<input type="hidden" name="type" value="{{$.ViewType}}">
+							<input type="hidden" name="repos" value="[{{range $.RepoIDs}}{{.}}%2C{{end}}]">
+							<input type="hidden" name="sort" value="{{$.SortType}}">
+							<input type="hidden" name="state" value="{{$.State}}">
+							<input name="q" value="{{$.Keyword}}" placeholder="{{.locale.Tr "explore.search"}}...">
+							<button class="ui small icon button" type="submit" aria-label="{{.locale.Tr "explore.search"}}">{{svg "octicon-search"}}</button>
+						</div>
+					</form>
+					<!-- Sort -->
+					<div class="list-header-sort ui small dropdown type jump item">
+						<span class="text gt-whitespace-nowrap">
+							{{.locale.Tr "repo.issues.filter_sort"}}
+							{{svg "octicon-triangle-down" 14 "dropdown icon"}}
+						</span>
+						<div class="menu">
+							<a class="{{if eq .SortType "recentupdate"}}active {{end}}item" href="{{$.Link}}?type={{$.ViewType}}&repos=[{{range $.RepoIDs}}{{.}}%2C{{end}}]&sort=recentupdate&state={{$.State}}&q={{$.Keyword}}">{{.locale.Tr "repo.issues.filter_sort.recentupdate"}}</a>
+							<a class="{{if eq .SortType "leastupdate"}}active {{end}}item" href="{{$.Link}}?type={{$.ViewType}}&repos=[{{range $.RepoIDs}}{{.}}%2C{{end}}]&sort=leastupdate&state={{$.State}}&q={{$.Keyword}}">{{.locale.Tr "repo.issues.filter_sort.leastupdate"}}</a>
+							<a class="{{if or (eq .SortType "latest") (not .SortType)}}active {{end}}item" href="{{$.Link}}?type={{$.ViewType}}&repos=[{{range $.RepoIDs}}{{.}}%2C{{end}}]&sort=latest&state={{$.State}}&q={{$.Keyword}}">{{.locale.Tr "repo.issues.filter_sort.latest"}}</a>
+							<a class="{{if eq .SortType "oldest"}}active {{end}}item" href="{{$.Link}}?type={{$.ViewType}}&repos=[{{range $.RepoIDs}}{{.}}%2C{{end}}]&sort=oldest&state={{$.State}}&q={{$.Keyword}}">{{.locale.Tr "repo.issues.filter_sort.oldest"}}</a>
+							<a class="{{if eq .SortType "mostcomment"}}active {{end}}item" href="{{$.Link}}?type={{$.ViewType}}&repos=[{{range $.RepoIDs}}{{.}}%2C{{end}}]&sort=mostcomment&state={{$.State}}&q={{$.Keyword}}">{{.locale.Tr "repo.issues.filter_sort.mostcomment"}}</a>
+							<a class="{{if eq .SortType "leastcomment"}}active {{end}}item" href="{{$.Link}}?type={{$.ViewType}}&repos=[{{range $.RepoIDs}}{{.}}%2C{{end}}]&sort=leastcomment&state={{$.State}}&q={{$.Keyword}}">{{.locale.Tr "repo.issues.filter_sort.leastcomment"}}</a>
+							<a class="{{if eq .SortType "nearduedate"}}active {{end}}item" href="{{$.Link}}?type={{$.ViewType}}&repos=[{{range $.RepoIDs}}{{.}}%2C{{end}}]&sort=nearduedate&state={{$.State}}&q={{$.Keyword}}">{{.locale.Tr "repo.issues.filter_sort.nearduedate"}}</a>
+							<a class="{{if eq .SortType "farduedate"}}active {{end}}item" href="{{$.Link}}?type={{$.ViewType}}&repos=[{{range $.RepoIDs}}{{.}}%2C{{end}}]&sort=farduedate&state={{$.State}}&q={{$.Keyword}}">{{.locale.Tr "repo.issues.filter_sort.farduedate"}}</a>
 						</div>
-						{{if .SingleRepoLink}}
-							{{if eq .SingleRepoAction "issue"}}
-								<a class="ui green button gt-ml-4" href="{{.SingleRepoLink}}/issues/new/choose">{{.locale.Tr "repo.issues.new"}}</a>
-							{{else if eq .SingleRepoAction "pull"}}
-								<a class="ui green button gt-ml-4" href="{{.SingleRepoLink}}/compare">{{.locale.Tr "repo.pulls.new"}}</a>
-							{{end}}
-						{{end}}
 					</div>
+					{{if .SingleRepoLink}}
+						{{if eq .SingleRepoAction "issue"}}
+							<a class="ui green button gt-ml-4" href="{{.SingleRepoLink}}/issues/new/choose">{{.locale.Tr "repo.issues.new"}}</a>
+						{{else if eq .SingleRepoAction "pull"}}
+							<a class="ui green button gt-ml-4" href="{{.SingleRepoLink}}/compare">{{.locale.Tr "repo.pulls.new"}}</a>
+						{{end}}
+					{{end}}
 				</div>
 				{{template "shared/issuelist" dict "." . "listType" "dashboard"}}
 			</div>
diff --git a/templates/user/dashboard/milestones.tmpl b/templates/user/dashboard/milestones.tmpl
index aaa728dab0..f9d8ae1eb0 100644
--- a/templates/user/dashboard/milestones.tmpl
+++ b/templates/user/dashboard/milestones.tmpl
@@ -34,46 +34,40 @@
 				</div>
 			</div>
 			<div class="twelve wide column content">
-				<div class="ui three column stackable grid">
-					<div class="column">
-						<div class="ui compact tiny menu">
-							<a class="item{{if not .IsShowClosed}} active{{end}}" href="{{.Link}}?repos=[{{range $.RepoIDs}}{{.}}%2C{{end}}]&sort={{$.SortType}}&state=open&q={{$.Keyword}}">
-								{{svg "octicon-milestone" 16 "gt-mr-3"}}
-								{{.locale.PrettyNumber .MilestoneStats.OpenCount}}&nbsp;{{.locale.Tr "repo.issues.open_title"}}
-							</a>
-							<a class="item{{if .IsShowClosed}} active{{end}}" href="{{.Link}}?repos=[{{range $.RepoIDs}}{{.}}%2C{{end}}]&sort={{$.SortType}}&state=closed&q={{$.Keyword}}">
-								{{svg "octicon-check" 16 "gt-mr-3"}}
-								{{.locale.PrettyNumber .MilestoneStats.ClosedCount}}&nbsp;{{.locale.Tr "repo.issues.closed_title"}}
-							</a>
-						</div>
+				<div class="list-header">
+					<div class="small-pill-buttons ui compact tiny menu">
+						<a class="item{{if not .IsShowClosed}} active{{end}}" href="{{.Link}}?repos=[{{range $.RepoIDs}}{{.}}%2C{{end}}]&sort={{$.SortType}}&state=open&q={{$.Keyword}}">
+							{{svg "octicon-milestone" 16 "gt-mr-3"}}
+							{{.locale.PrettyNumber .MilestoneStats.OpenCount}}&nbsp;{{.locale.Tr "repo.issues.open_title"}}
+						</a>
+						<a class="item{{if .IsShowClosed}} active{{end}}" href="{{.Link}}?repos=[{{range $.RepoIDs}}{{.}}%2C{{end}}]&sort={{$.SortType}}&state=closed&q={{$.Keyword}}">
+							{{svg "octicon-check" 16 "gt-mr-3"}}
+							{{.locale.PrettyNumber .MilestoneStats.ClosedCount}}&nbsp;{{.locale.Tr "repo.issues.closed_title"}}
+						</a>
 					</div>
-					<div class="column center aligned">
-						<form class="ui form ignore-dirty">
-							<div class="ui search fluid action input">
-								<input type="hidden" name="type" value="{{$.ViewType}}">
-								<input type="hidden" name="repos" value="[{{range $.RepoIDs}}{{.}},{{end}}]">
-								<input type="hidden" name="sort" value="{{$.SortType}}">
-								<input type="hidden" name="state" value="{{$.State}}">
-								<input name="q" value="{{$.Keyword}}" placeholder="{{.locale.Tr "explore.search"}}...">
-								<button class="ui primary button" type="submit">{{.locale.Tr "explore.search"}}</button>
-							</div>
-						</form>
-					</div>
-					<div class="column right aligned gt-df gt-ac gt-je">
-						<!-- Sort -->
-						<div class="ui dropdown type jump item">
-							<span class="text">
-								{{.locale.Tr "repo.issues.filter_sort"}}
-								{{svg "octicon-triangle-down" 14 "dropdown icon"}}
-							</span>
-							<div class="menu">
-								<a class="{{if or (eq .SortType "closestduedate") (not .SortType)}}active {{end}}item" href="{{$.Link}}?repos=[{{range $.RepoIDs}}{{.}}%2C{{end}}]&sort=closestduedate&state={{$.State}}&q={{$.Keyword}}">{{.locale.Tr "repo.milestones.filter_sort.closest_due_date"}}</a>
-								<a class="{{if eq .SortType "furthestduedate"}}active {{end}}item" href="{{$.Link}}?repos=[{{range $.RepoIDs}}{{.}}%2C{{end}}]&sort=furthestduedate&state={{$.State}}&q={{$.Keyword}}">{{.locale.Tr "repo.milestones.filter_sort.furthest_due_date"}}</a>
-								<a class="{{if eq .SortType "leastcomplete"}}active {{end}}item" href="{{$.Link}}?repos=[{{range $.RepoIDs}}{{.}}%2C{{end}}]&sort=leastcomplete&state={{$.State}}&q={{$.Keyword}}">{{.locale.Tr "repo.milestones.filter_sort.least_complete"}}</a>
-								<a class="{{if eq .SortType "mostcomplete"}}active {{end}}item" href="{{$.Link}}?repos=[{{range $.RepoIDs}}{{.}}%2C{{end}}]&sort=mostcomplete&state={{$.State}}&q={{$.Keyword}}">{{.locale.Tr "repo.milestones.filter_sort.most_complete"}}</a>
-								<a class="{{if eq .SortType "mostissues"}}active {{end}}item" href="{{$.Link}}?repos=[{{range $.RepoIDs}}{{.}}%2C{{end}}]&sort=mostissues&state={{$.State}}&q={{$.Keyword}}">{{.locale.Tr "repo.milestones.filter_sort.most_issues"}}</a>
-								<a class="{{if eq .SortType "leastissues"}}active {{end}}item" href="{{$.Link}}?repos=[{{range $.RepoIDs}}{{.}}%2C{{end}}]&sort=leastissues&state={{$.State}}&q={{$.Keyword}}">{{.locale.Tr "repo.milestones.filter_sort.least_issues"}}</a>
-							</div>
+					<form class="list-header-search ui form ignore-dirty">
+						<div class="ui small search fluid action input">
+							<input type="hidden" name="type" value="{{$.ViewType}}">
+							<input type="hidden" name="repos" value="[{{range $.RepoIDs}}{{.}},{{end}}]">
+							<input type="hidden" name="sort" value="{{$.SortType}}">
+							<input type="hidden" name="state" value="{{$.State}}">
+							<input name="q" value="{{$.Keyword}}" placeholder="{{.locale.Tr "explore.search"}}...">
+							<button class="ui small icon button" type="submit" aria-label="{{.locale.Tr "explore.search"}}">{{svg "octicon-search"}}</button>
+						</div>
+					</form>
+					<!-- Sort -->
+					<div class="list-header-sort ui dropdown type jump item">
+						<span class="text">
+							{{.locale.Tr "repo.issues.filter_sort"}}
+							{{svg "octicon-triangle-down" 14 "dropdown icon"}}
+						</span>
+						<div class="menu">
+							<a class="{{if or (eq .SortType "closestduedate") (not .SortType)}}active {{end}}item" href="{{$.Link}}?repos=[{{range $.RepoIDs}}{{.}}%2C{{end}}]&sort=closestduedate&state={{$.State}}&q={{$.Keyword}}">{{.locale.Tr "repo.milestones.filter_sort.closest_due_date"}}</a>
+							<a class="{{if eq .SortType "furthestduedate"}}active {{end}}item" href="{{$.Link}}?repos=[{{range $.RepoIDs}}{{.}}%2C{{end}}]&sort=furthestduedate&state={{$.State}}&q={{$.Keyword}}">{{.locale.Tr "repo.milestones.filter_sort.furthest_due_date"}}</a>
+							<a class="{{if eq .SortType "leastcomplete"}}active {{end}}item" href="{{$.Link}}?repos=[{{range $.RepoIDs}}{{.}}%2C{{end}}]&sort=leastcomplete&state={{$.State}}&q={{$.Keyword}}">{{.locale.Tr "repo.milestones.filter_sort.least_complete"}}</a>
+							<a class="{{if eq .SortType "mostcomplete"}}active {{end}}item" href="{{$.Link}}?repos=[{{range $.RepoIDs}}{{.}}%2C{{end}}]&sort=mostcomplete&state={{$.State}}&q={{$.Keyword}}">{{.locale.Tr "repo.milestones.filter_sort.most_complete"}}</a>
+							<a class="{{if eq .SortType "mostissues"}}active {{end}}item" href="{{$.Link}}?repos=[{{range $.RepoIDs}}{{.}}%2C{{end}}]&sort=mostissues&state={{$.State}}&q={{$.Keyword}}">{{.locale.Tr "repo.milestones.filter_sort.most_issues"}}</a>
+							<a class="{{if eq .SortType "leastissues"}}active {{end}}item" href="{{$.Link}}?repos=[{{range $.RepoIDs}}{{.}}%2C{{end}}]&sort=leastissues&state={{$.State}}&q={{$.Keyword}}">{{.locale.Tr "repo.milestones.filter_sort.least_issues"}}</a>
 						</div>
 					</div>
 				</div>
diff --git a/templates/user/notification/notification_subscriptions.tmpl b/templates/user/notification/notification_subscriptions.tmpl
index 26a33bf9ba..ce46919236 100644
--- a/templates/user/notification/notification_subscriptions.tmpl
+++ b/templates/user/notification/notification_subscriptions.tmpl
@@ -13,7 +13,7 @@
 			{{if eq .Status 1}}
 				<div id="issue-filters" class="ui stackable grid">
 					<div class="six wide column">
-						<div class="ui compact tiny menu">
+						<div class="small-pill-buttons ui compact tiny menu">
 							<a class="{{if eq .State "all"}}active {{end}}item" href="{{$.Link}}?sort={{$.SortType}}&state=all&issueType={{$.IssueType}}&labels={{$.Labels}}">
 								{{.locale.Tr "all"}}
 							</a>