Responsive view (#2750)

* Viewport meta tag

* responsive: dashboard

* responsive: issues page

* responsive: Explore page

* responsive: navbar, and some navbar css refactoring

* responsive: button for collapsing navbar in mobile view

* Mark the hamburger button as active when pressed

* better homepage for responsive views

* Bring back jump class in navbar

The class was necessary, because this way the
dropdown doesn't assume the contents of the
selected item.

* make repository homes responsive

* Make file view page responsive

* Make forms look good on responsive views

* make commits and commit diff view responsive

* issues and PRs

* responsive wiki

* Don't place auto-init far off the page

* Minor changes to amend broken stuff

minor improvements

- make login/sign up in navbar stackable
- make navbar in explore and sign in not stackable

Change selected class in TestPullCompare

Fix typo that happened when rebasing

fix dashboard on org view

improve profile UI

Use clearing on file diff to fix broken UI caused by floating elements

remove unresolved merge conflict, and | Sanitize

Fix repo home not loading

6 files changed, 206 insertions, 126 deletions

diff --git a/public/less/_base.less b/public/less/_base.less
index bb5fcbc73d..c17bdcb24c 100644
--- a/public/less/_base.less
+++ b/public/less/_base.less
@@ -1,7 +1,7 @@
 @footer-margin: 40px;
 
 body {
-    font-family: "Helvetica Neue", "Microsoft YaHei", Arial, Helvetica, sans-serif !important;
+    font-family: "Lato", "Microsoft YaHei", Arial, Helvetica, sans-serif !important;
     background-color: #fff;
     overflow-y: scroll;
     -webkit-font-smoothing: antialiased;
@@ -61,6 +61,7 @@ pre, code {
     z-index: 900;
     left: 0;
     width: 100%;
+    margin: 0;
     &.light {
         background-color: white;
         border-bottom: 1px solid #DDDDDD;
@@ -86,18 +87,11 @@ pre, code {
     .top.menu .menu {
         z-index: 900;
     }
-    .icon,
     .octicon {
-        margin-right: 5px !important;
-    }
-    .head.link.item {
-        padding-right: 0 !important;
-    }
-    .avatar > .ui.image {
-        margin-right: 0;
-    }
-    .avatar .octicon-triangle-down {
-        margin-top: 6.5px;
+        &.fitted {
+            margin-right: 0;
+        }
+        margin-right: .75em;
     }
     .searchbox {
         background-color: rgb(244, 244, 244) !important;
@@ -109,17 +103,26 @@ pre, code {
         width: 16px;
         text-align: center;
     }
-    .right.menu {
-        .menu {
-            left: auto;
-            right: 0;
-        }
-        .dropdown .menu {
-            margin-top: 0;
+    @media only screen and (max-width: 767px) {
+        #navbar:not(.shown) > *:not(:first-child) {
+            display: none;
         }
     }
 }
 
+.right.stackable.menu {
+    // responsive fix: this makes sure that the right menu when the page
+    // is on mobile view will have elements stacked on top of each other.
+    // no, stackable won't work on right menus.
+    margin-left: auto;
+    display: flex;
+    display: -ms-flexbox;
+    -ms-flex-align: inherit;
+    align-items: inherit;
+    -ms-flex-direction: inherit;
+    flex-direction: inherit;
+}
+
 .ui {
     &.left {
         float: left;
@@ -443,6 +446,23 @@ footer {
     .generate-img(@n, (@i + 1));
 }
 
+// Conditional display
+@media only screen and (min-width: 768px) {
+    .mobile-only, .ui.button.mobile-only {
+      display: none;
+    }
+    // has the same behaviour of sr-only, hiding the content for
+    // non-screenreaders, but is shown on mobile devices.
+    .sr-mobile-only {
+        .sr-only();
+    }
+}
+@media only screen and (max-width: 767px) {
+    .not-mobile {
+        display: none;
+    }
+}
+
 // Accessibility
 .sr-only {
     position: absolute;
diff --git a/public/less/_dashboard.less b/public/less/_dashboard.less
index c76363983f..85787ce2be 100644
--- a/public/less/_dashboard.less
+++ b/public/less/_dashboard.less
@@ -29,26 +29,23 @@
                 }
             }
 
-            // Sort
-            .jump.item {
-                margin: 1px;
-                padding-right: 0;
-            }
-            .menu {
-                max-height: 300px;
-                overflow-x: auto;
-                right: 0!important;
-                left: auto!important;
-            }
-        }
-        .ui.right .head.menu {
-            margin-top: -5px;
-            .item.active {
-                color: #d9453d;
-            }
-        }
+			// Sort
+			.jump.item {
+				margin: 1px;
+				padding-right: 0;
+			}
+			.menu {
+				max-height: 300px;
+				overflow-x: auto;
+				right: 0!important;
+				left: auto!important;
+			}
+		}
+		.right.stackable.menu > .item.active {
+			color: #d9453d;
+		}
     }
-
+    
     /* Accomodate for Semantic's 1px hacks on .attached elements */
     .dashboard-repos {
         margin: 0 1px;
diff --git a/public/less/_explore.less b/public/less/_explore.less
index ce942ab78d..61cdf8dbf8 100644
--- a/public/less/_explore.less
+++ b/public/less/_explore.less
@@ -10,11 +10,12 @@
         background-color: #FAFAFA !important;
         border-width: 1px !important;
 
-        .octicon {
-            width: 16px;
-            text-align: center;
-        }
-    }
+		.octicon {
+			width: 16px;
+			text-align: center;
+			margin-right: 5px;
+		}
+	}
 }
 
 .ui.repository.list {
diff --git a/public/less/_form.less b/public/less/_form.less
index 040e4aff13..a352e1ebb5 100644
--- a/public/less/_form.less
+++ b/public/less/_form.less
@@ -19,31 +19,41 @@
 
 @create-page-form-input-padding: 250px !important;
 #create-page-form {
-    form {
-        margin: auto;
-        width: 800px!important;
-        .ui.message {
-            text-align: center;
-        }
-        .header {
-            padding-left: @create-page-form-input-padding+30px;
-        }
-        .inline.field > label {
-            text-align: right;
-            width: @create-page-form-input-padding;
-            word-wrap: break-word;
-        }
-        .help {
-            margin-left: @create-page-form-input-padding+15px;
-        }
-        .optional .title {
-            margin-left: @create-page-form-input-padding;
-        }
-        input,
-        textarea {
-            width: 50%!important;
-        }
-    }
+	form {
+		margin: auto;
+		.ui.message {
+			text-align: center;
+		}
+		@media only screen and (min-width: 768px) {
+			width: 800px!important;
+			.header {
+				padding-left: @create-page-form-input-padding+30px;
+			}
+			.inline.field > label {
+				text-align: right;
+				width: @create-page-form-input-padding;
+				word-wrap: break-word;
+			}
+			.help {
+				margin-left: @create-page-form-input-padding+15px;
+			}
+			.optional .title {
+				margin-left: @create-page-form-input-padding;
+			}
+			input,
+			textarea {
+				width: 50%!important;
+			}
+		}
+		@media only screen and (max-width: 767px) {
+			.optional .title {
+				margin-left: 15px;
+			}
+			.inline.field > label {
+				display: block;
+			}
+		}
+	}
 }
 
 .signin {
@@ -113,16 +123,18 @@
         }
     }
 
-    &.new.repo {
-        .ui.form {
-            .selection.dropdown:not(.owner) {
-                width: 50%!important;
-            }
-            #auto-init {
-                margin-left: @create-page-form-input-padding+15px;
-            }
-        }
-    }
+	&.new.repo {
+		.ui.form {
+			.selection.dropdown:not(.owner) {
+				width: 50%!important;
+			}
+			@media only screen and (min-width: 768px) {
+				#auto-init {
+					margin-left: @create-page-form-input-padding+15px;
+				}
+			}
+		}
+	}
 }
 
 .new.webhook {
diff --git a/public/less/_home.less b/public/less/_home.less
index 28487fedad..c90e8ec414 100644
--- a/public/less/_home.less
+++ b/public/less/_home.less
@@ -1,36 +1,46 @@
 .home {
-    padding-bottom: @footer-margin * 2;
-    .logo {
-        max-width: 220px;
-    }
-    .hero {
-        h1, h2 {
-            font-family: 'PT Sans Narrow', sans-serif, 'Microsoft YaHei';
-        }
-        h1 {
-            font-size: 5.5em;
-        }
-        h2 {
-            font-size: 3em;
-        }
-        .octicon {
-            color: #5aa509;
-            font-size: 40px;
-            width: 50px;
-        }
-        &.header {
-            font-size: 20px;
-        }
-    }
-    p.large {
-        font-size: 16px
-    }
-    .stackable {
-        padding-top: 30px;
-    }
-    a {
-        color: #5aa509;
-    }
+	padding-bottom: @footer-margin * 2;
+	.logo {
+		max-width: 220px;
+	}
+	.hero {
+		h1, h2 {
+			font-family: 'PT Sans Narrow', sans-serif, 'Microsoft YaHei';
+		}
+		@media only screen and (max-width: 767px) {
+			h1 {
+				font-size: 3.5em;
+			}
+			h2 {
+				font-size: 2em;
+			}
+		}
+		@media only screen and (min-width: 768px) {
+			h1 {
+				font-size: 5.5em;
+			}
+			h2 {
+				font-size: 3em;
+			}
+		}
+		.octicon {
+			color: #5aa509;
+			font-size: 40px;
+			width: 50px;
+		}
+		&.header {
+			font-size: 20px;
+		}
+	}
+	p.large {
+		font-size: 16px
+	}
+	.stackable {
+		padding-top: 30px;
+	}
+	a {
+		color: #5aa509;
+	}
 }
 
 .signup {
diff --git a/public/less/_repository.less b/public/less/_repository.less
index f2ee37544c..a69bc44d65 100644
--- a/public/less/_repository.less
+++ b/public/less/_repository.less
@@ -4,11 +4,9 @@
     padding-top: 15px;
     padding-bottom: @footer-margin * 2;
 
-    .head {
-        .column {
-            padding-top: 5px !important;
-            padding-bottom: 5px !important;
-        }
+    .header-grid {
+        padding-top: 5px;
+        padding-bottom: 5px;
         .ui.compact.menu {
             margin-left: 1rem;
         }
@@ -34,6 +32,10 @@
             margin-top: -1px;
             font-size: 15px;
         }
+        .button {
+            margin-top: 2px;
+            margin-bottom: 2px;
+        }
     }
 
     .tabs {
@@ -55,6 +57,20 @@
     .owner.dropdown {
         min-width: 40% !important;
     }
+    #file-buttons {
+        /* The reason for the !important is that Semantic itself has
+        margin-left: 0 !important on right items on mobile, which is mostly
+        to make sure elements which on menus would otherwise be on the right
+        align correctly with other elements when stacked.
+        Unfortunately, this brings some weird alignment on this particular
+        element, so we need to override it. */
+        margin-left: auto !important;
+        font-weight: normal;
+        .ui.button {
+            padding: 8px 10px;
+            font-weight: normal;
+        }
+    }
 
     .metas {
         .menu {
@@ -133,7 +149,6 @@
     }
 
     #clone-panel {
-        margin-left: 5px;
         width: 350px;
 
         input {
@@ -235,9 +250,10 @@
             .header {
                 .icon {
                     font-size: 1em;
-                    margin-top: -2px;
                 }
                 .file-actions {
+                    margin-top: 0;
+                    margin-bottom: -5px;
                     padding-left: 20px;
                     .btn-octicon {
                         display: inline-block;
@@ -814,12 +830,10 @@
 
     &.commits {
         .header {
-            .ui.right {
-                .search {
-                    input {
-                        font-weight: normal;
-                        padding: 5px 10px;
-                    }
+            .search {
+                input {
+                    font-weight: normal;
+                    padding: 5px 10px;
                 }
             }
         }
@@ -830,7 +844,9 @@
                 padding-left: 15px;
             }
             .sha {
-                text-align: center;
+                &td {
+                    text-align: center;
+                }
                 width: 140px;
             }
         }
@@ -898,6 +914,9 @@
                 background-color: #dad8ff;
             }
         }
+        .ui.right {
+            margin-bottom: 15px;
+        }
     }
     .diff-box .header {
         display: flex;
@@ -1039,6 +1058,7 @@
                 max-width: 100%;
                 padding: 5px 5px 0 5px;
             }
+            clear: right;
         }
     }
     .code-view {
@@ -1241,6 +1261,13 @@
                 }
             }
         }
+
+        @media only screen and (max-width: 767px) {
+			.dividing.header .stackable.grid .button {
+				margin-top: 2px;
+				margin-bottom: 2px;
+			}
+		}
     }
 
     &.settings {
@@ -1437,8 +1464,8 @@
     }
 }
 
-.issue-actions {
-        display: none;
+#issue-actions {
+    display: none;
 }
 
 .issue.list {
@@ -1651,3 +1678,16 @@ tbody.commit-list {
 .commit-body {
     white-space: pre-wrap;
 }
+
+@media only screen and (max-width: 767px) {
+	.ui.stackable.menu {
+		&.mobile--margin-between-items > .item {
+			margin-top: 5px;
+			margin-bottom: 5px;
+		}
+		&.mobile--no-negative-margins {
+			margin-left: 0;
+			margin-right: 0;
+		}
+	}
+}