[SD-828] Fixing the nosetests and behave tests when AD is active. Because of role changes these tests were failing.
[SD-828] Modified travis configuration to run behave tests for AD also.
Merge remote-tracking branch 'upstream/master'
fixed item autosave/lock

- changed the backend for model objects to EveBackend
- changed the verification for existing item in autosave
- removed custom data layer (not needed anymore)
Merge remote-tracking branch 'mugur/master'
test(autosave): make sure something gets stored

while server responds with 201 db is empty

SD-659