push paging information to view
implement limit handlers
Implements filter mechanism
Fixed 'activate all checkboxes'
implements sorting mechanism
obtimise editGroupMembership view controller
replace spaces with tabs
add new test data
Refactor tests
Add new tests of assignment and paging of user in groups
Add ids to make elements unique and usable for tests
fix rebase failures
Merge pull request #29 from osiam/osng-495

i merge you!