UI changes (#6876)

* PLT-7011 - Long channel name truncation

* PLT-7013 - Fixing channel header mobile

* PLT-7012 - Updating quick switch modal on mobile

* PLT-7008 - Channel preferences mobile fix

* PLT-7014 - Increasing tap area for channel desc

webapp/sass/layout/_headers.scss

@@ -195,11 +195,14 @@
 
     .channel-header__description {
         display: inline-block;
-        height: 22px;
-        margin-top: 3px;
-        max-width: calc(100vw - 730px);
+        height: 35px;
+        margin-top: -10px;
+        max-width: calc(100vw - 720px);
         overflow: hidden;
+        padding: 3px 0 0;
+        position: relative;
         text-overflow: ellipsis;
+        top: 10px;
         white-space: nowrap;
         word-break: break-word;
 
@@ -209,7 +212,7 @@
         }
 
         .multi-teams & {
-            max-width: calc(100vw - 780px);
+            max-width: calc(100vw - 790px);
         }
 
         &.light {
@@ -223,7 +226,11 @@
         }
 
         .move--left & {
-            max-width: calc(100vw - 780px);
+            max-width: calc(100vw - 790px);
+
+            .multi-teams & {
+                max-width: calc(100vw - 840px);
+            }
         }
 
         .markdown-inline-img {

webapp/sass/layout/_navigation.scss

@@ -104,13 +104,13 @@
             padding: 0 .5em;
 
             .heading {
-                color: $white;
                 display: inline-block;
                 font-weight: 600;
                 line-height: 50px;
                 margin-right: 5px;
                 max-width: calc(100% - 200px);
                 overflow: hidden;
+                text-overflow: ellipsis;
                 vertical-align: top;
             }
 

webapp/sass/layout/_sidebar-right.scss

@@ -207,6 +207,10 @@
         }
     }
 
+    .sidebar--right__title {
+        @include clearfix;
+    }
+
     .sidebar--right__header {
         @include flex(0 0 44px);
         border-bottom: 1px solid;
@@ -214,6 +218,7 @@
         font-size: 1em;
         height: 44px;
         line-height: 44px;
+        overflow: hidden;
         padding: 0 5px 0 15px;
         text-transform: uppercase;
     }

webapp/sass/responsive/_mobile.scss

@@ -781,10 +781,7 @@
 
                     .settings-content {
                         .section-edit {
-                            padding-right: 0;
-                            position: absolute;
-                            right: 15px;
-                            top: 14px;
+                            text-align: left;
 
                             .fa {
                                 display: inline-block;