Re-add div to input button (#348)

Author: RanjitCS

src/main/resources/jenkins/scm/api/form/traits.jelly

@@ -162,8 +162,10 @@ THE SOFTWARE.
       </j:forEach>
     </div>
 
-    <input type="button" value="${attrs.addCaption?:'%Add'}" class="hetero-list-add trait-add"
-           menualign="${attrs.menuAlign}"
-           suffix="${attrs.field}"/>
+    <div>
+      <input type="button" value="${attrs.addCaption?:'%Add'}" class="hetero-list-add trait-add"
+             menualign="${attrs.menuAlign}"
+             suffix="${attrs.field}"/>
+    </div>
   </div>
 </j:jelly>