(refs #265)Fix label pulldown position.

src/main/twirl/helper/dropdown.scala.html

@@ -1,4 +1,4 @@
-@(value: String = "", prefix: String = "", mini: Boolean = true, style: String = "")(body: Html)
+@(value: String = "", prefix: String = "", mini: Boolean = true, style: String = "", right: Boolean = false)(body: Html)
 <div class="btn-group"@if(style.nonEmpty){ style="@style"}>
   <button class="btn dropdown-toggle@if(mini){ btn-mini}" data-toggle="dropdown">
     @if(value.isEmpty){
@@ -11,7 +11,7 @@
     }
     <span class="caret"></span>
   </button>
-  <ul class="dropdown-menu">
+  <ul class="dropdown-menu@if(right){ pull-right}">
     @body
   </ul>
 </div>

src/main/twirl/issues/labels.scala.html

@@ -8,7 +8,7 @@
   <span class="strong">Labels</span>
   @if(hasWritePermission){
     <div class="pull-right">
-      @helper.html.dropdown() {
+      @helper.html.dropdown(right = true) {
         @labels.map { label =>
           <li>
             <a href="#" class="toggle-label" data-label-id="@label.labelId">