Fixes failing tests

Adds a seperate unit test app loader, removes e2e backend from tests
adds scope.digest and httpbackend.flush to tests

src/Umbraco.Web.UI.Client/test/config/app.unit.js

@@ -0,0 +1,8 @@
+var app = angular.module('umbraco', [
+	'umbraco.filters',
+	'umbraco.directives',
+	'umbraco.resources',
+	'umbraco.services',
+	'umbraco.mocks',
+	'umbraco.security'
+]);