Merge pull request #3 from boazin/master

/rest/tests, /rest/sessions/<id>/tests
Minor fixes to set_product and the related test fixture
Uncomment out test assertion
Initial support for querying as a baseline
Add missing indices
Add coverage info in unit tests
Fix filtering bug
working on filter_by - middle of work (need to rebase bug fixes)
Merge branch 'master' of https://github.com/vmalloc/backslash
forgotten added files
query tests and sessions by status