Add tooltip to upload application disabled submit button

webapp/frontend/app/controllers/lambda-apps/upload.js

@@ -4,6 +4,7 @@ var UploadController = Ember.Controller.extend({
   session: Ember.inject.service('session'),
   wrongExt: false,
   userHasEnteredData: false,
+  submitDisabled: false,
 
   actions : {
     upload: function() {
@@ -53,6 +54,7 @@ var UploadController = Ember.Controller.extend({
           var xhr = new window.XMLHttpRequest();
           _this.set("userHasEnteredData", true);
           submit_button.setAttribute("disabled", "disabled");
+          _this.set("submitDisabled", true);
           //Upload progress
           xhr.upload.addEventListener("progress", function(evt){
             if (evt.lengthComputable) {
@@ -62,6 +64,7 @@ var UploadController = Ember.Controller.extend({
               if (percentComplete === 1)
               {
                 submit_button.removeAttribute("disabled");
+                _this.set("submitDisabled", false);
                 _this.set("userHasEnteredData", false);
               }
             }

webapp/frontend/app/templates/lambda-apps/upload.hbs

@@ -125,7 +125,15 @@
     </div><!--col-->
     </div><!--row-->
 
+    {{#unless submitDisabled}}
       <button type="submit" class="btn btn-primary" id="submit-button">Submit</button>
+    {{else}}
+      {{#tool-tip}}
+          <button type="submit" class="btn btn-primary has-tooltip"
+                  data-tooltip-content="<center>An application is already uploading!</center>"
+                  id="submit-button">Submit</button>
+      {{/tool-tip}}
+    {{/unless}}
 
       </form>