Merge branch 'release-3.5'

webapp/sass/layout/_headers.scss

@@ -1,7 +1,7 @@
 @charset 'UTF-8';
 
 .channel-header {
-    @include flex(0 0 56px);
+    @include flex(0 0 57px);
     border-left: none;
     font-size: 14px;
     line-height: 56px;