Merge 3.9 RC5 fixes into master (#6459)

* UI fixes for 3.9 (#6400)

* UI fixes for header icon alignment

* PLT-6569 - Fixing pin icon in header

* PLT-6505 - Updating z-index for emoji picker

* Updating z-index for overlaying sidebar

* PLT-6134 - Fix for emoji picker on comments

* Reverting emoji picker fix

* Fixing alignment for header icons

* Removing channel title changes

* Don't show mention badge for active channel (#6411)

* PLT-6583 - Fixing RHS compact view (#6413)

webapp/components/navbar.jsx

@@ -896,7 +896,7 @@ export default class Navbar extends React.Component {
         const searchButton = (
             <button
                 type='button'
-                className='navbar-toggle pull-right'
+                className='navbar-toggle navbar-search pull-right'
                 onClick={this.showSearch}
             >
                 <span className='fa fa-search icon-search icon--white'/>

webapp/components/rhs_comment.jsx

@@ -379,7 +379,7 @@ export default class RhsComment extends React.Component {
         }
 
         if (this.props.compactDisplay) {
-            className += 'post--compact';
+            className += ' post--compact';
         }
 
         if (post.is_pinned) {

webapp/components/rhs_root_post.jsx

@@ -190,7 +190,7 @@ export default class RhsRootPost extends React.Component {
         }
 
         if (this.props.compactDisplay) {
-            className += 'post--compact';
+            className += ' post--compact';
         }
 
         if (post.is_pinned) {

webapp/components/search_results_item.jsx

@@ -166,7 +166,7 @@ export default class SearchResultsItem extends React.Component {
         let compactClass = '';
         const profilePicContainer = (<div className='post__img'>{profilePic}</div>);
         if (this.props.compactDisplay) {
-            compactClass = 'post--compact';
+            compactClass = ' post--compact';
         }
 
         let fileAttachment = null;