Very basic test for paging works.
Test denormalised view for paging.
Make all online tests pass with paging changes.
More test cases
Paging documentation update for app-schema.
Updating version numbers to 2.7-SNAPSHOT
Check for nulls when generating GeoJSON
Merge pull request #676 from riniangreani/wfs20paginggeoserver

Tests for app-schema paging
Update gt version to 13-SNAPSHOT