Fixing some code quality warnings

Author: jonoomph

src/timeline/app.js

@@ -27,7 +27,7 @@
  */
 
 // Initialize Angular application
-/*global App, angular*/
+/*global App, angular, timeline, init_mixin*/
 var App = angular.module("openshot-timeline", ["ui.bootstrap", "ngAnimate"]);
 
 

src/timeline/js/mixin_webengine.js

@@ -25,13 +25,13 @@
  * along with OpenShot Library.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-/*global timeline*/
+/*global timeline, angular, QWebChannel*/
 var timeline = null;
 
 function init_mixin() {
 
   // Check for Qt Integration
-  new QWebChannel(qt.webChannelTransport, function (channel) {
+  var channel = new QWebChannel(qt.webChannelTransport, function (channel) {
     timeline = channel.objects.timeline;
     timeline.qt_log("INFO", "Qt Ready");
 

src/timeline/js/mixin_webkit.js

@@ -25,8 +25,7 @@
  * along with OpenShot Library.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-// undef global timeline var
-//timeline = undefined;
+/*global timeline, angular*/
 
 function init_mixin() {