Get backpacks on update and save of backpack
Create ListCtrl for other controllers to extend; BackpacksCtrl extends ListCtrl
Extend ListCtrl into BackpackCtrl
Merge pull request #237 from theponti/feature/category-directive

Feature/category directive
Send folders with categories to backpack query
Send folders with categories to backpack query; Update documentation
Send folders with categories to backpack query; Update documentation
Update Documentation
Merge pull request #239 from theponti/feature/category-directive

Feature/category directive
Merge pull request #238 from theponti/development

Development