Merge branch '10708-environments-scss' into 'master'

Removes EE differences for environments.scss

Closes gitlab-ee#10708

See merge request gitlab-org/gitlab-ce!26648

app/assets/stylesheets/pages/environments.scss

@@ -346,7 +346,9 @@
     }
 
     > .popover-title,
-    > .popover-content {
+    > .popover-content,
+    > .popover-header,
+    > .popover-body {
       padding: 8px;
       font-size: 12px;
       white-space: nowrap;