[BUG #8609] Add factory test for widget
[BUG #8609] Add class class for tree widget
[BUG #8609] Add factory test for toolbar widget
[BUG #8609] Enable widget factory for navigation page widget
[BUG #8609] Enable widget factory for page widget
[BUG #8609] Add factory test for tabbar widget
[BUG #8609] Add factory test for navigation page widget
[BUG #8609] Add factory test for page widget
[BUG #8609] Enable factory test for navigation-bar widget
[BUG #8609] Avoid usage of getApplication and fix tests for page widget