bitbake: toaster: importlayer Add git revision typeahead to that input field

Add the front end mechanism to load the typeahead for the git revision
field on importing a layer.
Also fix one indentation issue and update the js test.

(Bitbake rev: 28114be42174095b812a93d4b5a0e01e953d74f8)

Signed-off-by: Michael Wood <michael.g.wood@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/toaster/toastergui/templates/importlayer.html

@@ -14,6 +14,7 @@
   $(document).ready(function (){
     var ctx = {
       xhrLayerUrl : "{% url 'xhr_layer' project.id %}",
+      xhrGitRevTypeAheadUrl : "{% url 'xhr_gitrevtypeahead' %}",
     };
 
     try {
@@ -112,8 +113,10 @@
           Git revision
           <span class="glyphicon glyphicon-question-sign get-help" title="You can provide a Git branch, a tag or a commit SHA as the revision"></span>
         </label>
-        <input type="text" class="form-control" id="layer-git-ref" required>
+        <span style="display: block">
+        <input type="text" class="form-control" id="layer-git-ref" autocomplete="off" data-minLength="1" data-autocomplete="off" data-provide="typeahead" required>
         <span class="help-inline" style="display:none;" id="invalid-layer-revision-hint"></span>
+        </span>
       </div>
     </fieldset>