Fixes tsquillario/Jamstash#206

- We no longer use toString() if the album's artist info is missing.
- Moved date formatting to utils-service.js and added TODOs to use angular filters instead
- Cleaned up utils-service.js and remove unused functions
- We no longer exclude vendor js files in karma, so we can test our call to jquery.dateFormat

app/common/main-controller.js

@@ -270,9 +270,6 @@ angular.module('JamStash')
     $scope.isActive = function (route) {
         return route === $location.path();
     };
-    $rootScope.reloadRoute = function (reload) {
-        utils.reloadRoute(reload);
-    };
     $rootScope.getSplitPosition = function (scope, elm) {
         window.alert(elm.getBoundingClientRect().left);
     };