Multiple UI improvements (#3220)

* Multiple UI improvements

* Pushing time fix

* Fixing absolute time stamps on IOS

webapp/sass/layout/_headers.scss

@@ -68,7 +68,6 @@
 .channel-intro {
     border-bottom: 1px solid $light-gray;
     margin: 0 auto 15px;
-    max-width: 990px;
     padding: 0 15px;
 
     .intro-links {