Adding expand icon for RHS (#3386)

* Adding expand icon for RHS

Fixing errors

Adding back getTeamInviteLink with better functionality for mobile

Adding vertical align to post__link

Updating improvements for expand RHS stuff

* Improving transition on mobile

* Removing irrelevant changes

webapp/sass/components/_module.scss

@@ -14,6 +14,7 @@
 @import 'save-button';
 @import 'scrollbar';
 @import 'search';
+@import 'status-icon';
 @import 'suggestion-list';
 @import 'tooltip';
 @import 'tutorial';