make editor request all states when no states checked in UI
prevent server returning all states when none are requested
prevent TextFlowDAO returning all states when none are requested
move rule for requesting all states when none are checked into context class
fix paging bug in editor: https://bugzilla.redhat.com/show_bug.cgi?id=983786
Merge pull request #43 from zanata/flip-filters-in-editor

Re-created: moves all logic to the server for requesting all states when no checkboxes are checked.
Merge pull request #44 from zanata/rhbz983786

fix paging bug in editor: https://bugzilla.redhat.com/show_bug.cgi?id=983786