[model] Abstract: add 'sortId' field
[services] Abstract: Order by sortId, title
[js/model] add sortId member to Abstract class
[views+css] AbstractList: add sortId to the list view
[views] AbstractList: fix the sammy group route
[views+js] Enable group filtering and highlight active tab
Merge pull request #65 from gicmo/sortId

Implement Abstract.sortId and enable client side filtering based on it

OK