Issue due date (#3794)

* Started adding deadline to ui

* Implemented basic issue due date managing

* Improved UI for due date managing

* Added at least write access to the repo in order to modify issue due dates

* Ui improvements

* Added issue comments creation when adding/modifying/removing a due date

* Show due date in issue list

* Added api support for issue due dates

* Fixed lint suggestions

* Added deadline to sdk

* Updated css

* Added support for adding/modifiying deadlines for pull requests via api

* Fixed comments not created when updating or removing a deadline

* update sdk (will do properly once go-gitea/go-sdk#103 is merged)

* enhanced updateIssueDeadline

* Removed unnessecary Issue.DeadlineString

* UI improvements

* Small improvments to comment creation
+ ui & validation improvements

* Check if an issue is overdue is now a seperate function

* Updated go-sdk with govendor as it was merged

* Simplified isOverdue method

* removed unessecary deadline to 0 set

* Update swagger definitions

* Added missing return

* Added an explanary comment

* Improved updateIssueDeadline method so it'll only update `deadline_unix`

* Small changes and improvements
* no need to explicitly load the issue when updating a deadline, just use whats already there
* small optimisations

* Added check if a deadline was modified before updating it

* Moved comment creating logic into its own function

* Code cleanup for creating deadline comment

* locale improvement

* When modifying a deadline, the old deadline is saved with the comment

* small improvments to xorm session handling when updating an issue deadline
+ style nitpicks

* style nitpicks

* Moved checking for if the user has write acces to middleware

1 files changed, 31 insertions, 1 deletions

diff --git a/templates/repo/issue/view_content/comments.tmpl b/templates/repo/issue/view_content/comments.tmpl
index 662155144f..b6d2c96bb5 100644
--- a/templates/repo/issue/view_content/comments.tmpl
+++ b/templates/repo/issue/view_content/comments.tmpl
@@ -1,7 +1,7 @@
 {{range .Issue.Comments}}
 	{{ $createdStr:= TimeSinceUnix .CreatedUnix $.Lang }}
 
-	<!-- 0 = COMMENT, 1 = REOPEN, 2 = CLOSE, 3 = ISSUE_REF, 4 = COMMIT_REF, 5 = COMMENT_REF, 6 = PULL_REF, 7 = COMMENT_LABEL, 12 = START_TRACKING, 13 = STOP_TRACKING, 14 = ADD_TIME_MANUAL -->
+	<!-- 0 = COMMENT, 1 = REOPEN, 2 = CLOSE, 3 = ISSUE_REF, 4 = COMMIT_REF, 5 = COMMENT_REF, 6 = PULL_REF, 7 = COMMENT_LABEL, 12 = START_TRACKING, 13 = STOP_TRACKING, 14 = ADD_TIME_MANUAL, 16 = ADDED_DEADLINE, 17 = MODIFIED_DEADLINE, 18 = REMOVED_DEADLINE -->
 	{{if eq .Type 0}}
 		<div class="comment" id="{{.HashTag}}">
 			<a class="avatar" {{if gt .Poster.ID 0}}href="{{.Poster.HomeLink}}"{{end}}>
@@ -189,5 +189,35 @@
 			</a>
 			<span class="text grey"><a href="{{.Poster.HomeLink}}">{{.Poster.Name}}</a> {{$.i18n.Tr "repo.issues.cancel_tracking_history"  $createdStr | Safe}}</span>
 		</div>
+	{{else if eq .Type 16}}
+		<div class="event">
+			<span class="octicon octicon-primitive-dot"></span>
+			<a class="ui avatar image" href="{{.Poster.HomeLink}}">
+				<img src="{{.Poster.RelAvatarLink}}">
+			</a>
+			<span class="text grey"><a href="{{.Poster.HomeLink}}">{{.Poster.Name}}</a>
+			{{$.i18n.Tr "repo.issues.due_date_added" .Content $createdStr | Safe}}
+			</span>
+		</div>
+	{{else if eq .Type 17}}
+		<div class="event">
+			<span class="octicon octicon-primitive-dot"></span>
+			<a class="ui avatar image" href="{{.Poster.HomeLink}}">
+				<img src="{{.Poster.RelAvatarLink}}">
+			</a>
+			<span class="text grey"><a href="{{.Poster.HomeLink}}">{{.Poster.Name}}</a>
+			{{$.i18n.Tr "repo.issues.due_date_modified" (.Content | ParseDeadline) $createdStr | Safe}}
+			</span>
+		</div>
+	{{else if eq .Type 18}}
+		<div class="event">
+			<span class="octicon octicon-primitive-dot"></span>
+			<a class="ui avatar image" href="{{.Poster.HomeLink}}">
+				<img src="{{.Poster.RelAvatarLink}}">
+			</a>
+			<span class="text grey"><a href="{{.Poster.HomeLink}}">{{.Poster.Name}}</a>
+			{{$.i18n.Tr "repo.issues.due_date_remove" .Content $createdStr | Safe}}
+			</span>
+		</div>
 	{{end}}
 {{end}}