Merge fileTabTemplate into sole caller

src/app.js

@@ -293,7 +293,8 @@ var run = function () {
     $('#output').empty()
 
     for (var f in files) {
-      $filesEl.append(fileTabTemplate(files[f]))
+      var name = utils.fileNameFromKey(files[f])
+      $filesEl.append($('<li class="file"><span class="name">' + name + '</span><span class="remove"><i class="fa fa-close"></i></span></li>'))
     }
 
     if (editor.cacheFileIsPresent()) {
@@ -306,11 +307,6 @@ var run = function () {
     reAdjust()
   }
 
-  function fileTabTemplate (key) {
-    var name = utils.fileNameFromKey(key)
-    return $('<li class="file"><span class="name">' + name + '</span><span class="remove"><i class="fa fa-close"></i></span></li>')
-  }
-
   var $filesWrapper = $('.files-wrapper')
   var $scrollerRight = $('.scroller-right')
   var $scrollerLeft = $('.scroller-left')