Merge branch '18854-prio-labels-on-mobile' into 'master'

Fixes labels view on mobile

## What does this MR do?
Fixes priority labels view on mobile

## What are the relevant issue numbers?
Fixes #18854

## Screenshots (if relevant)

<img src="/uploads/f75be3a2788858f12a63820559f20886/Screen_Shot_2016-06-20_at_2.23.26_PM.png" width="487">


See merge request !4806

app/assets/stylesheets/pages/labels.scss

@@ -50,11 +50,10 @@
 .label-row {
   .label-name {
-    display: block;
+    display: inline-block;
     margin-bottom: 10px;
     @media (min-width: $screen-sm-min) {
-      display: inline-block;
       width: 200px;
       margin-bottom: 0;
     }
@@ -63,6 +62,7 @@
   .label-description {
     display: block;
     margin-bottom: 10px;
+    margin-left: 50px;
     @media (min-width: $screen-sm-min) {
       display: inline-block;