Fix issue and pull request creation form styles

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

@@ -11,7 +11,7 @@
 @html.main(s"${issue.title} - Issue #${issue.issueId} - ${repository.owner}/${repository.name}", Some(repository)){
   @html.menu("issues", repository){
     @tab("issues", repository)
-    <ul class="nav nav-tabs">
+    <ul class="nav nav-tabs pull-left fill-width">
       <li class="pull-left"><a href="@url(repository)/issues"><i class="icon-arrow-left"></i> Back to issue list</a></li>
       <li class="pull-right">Issue #@issue.issueId</li>
     </ul>