Limit dropdown toggle width for protected branches / tags

app/assets/stylesheets/pages/projects.scss

@@ -935,11 +935,6 @@ pre.light-well {
     }
   }
-  .dropdown-menu-toggle {
-    width: 100%;
-    max-width: 300px;
-  }
-
   .flash-container {
     padding: 0;
   }

app/views/projects/protected_branches/shared/_branches_list.html.haml

-.panel.panel-default.protected-branches-list.js-protected-branches-list
+.protected-branches-list.js-protected-branches-list
   - if @protected_branches.empty?
     .panel-heading
       %h3.panel-title

app/views/projects/protected_tags/shared/_tags_list.html.haml

-.panel.panel-default.protected-tags-list.js-protected-tags-list
+.protected-tags-list.js-protected-tags-list
   - if @protected_tags.empty?
     .panel-heading
       %h3.panel-title