allow for null callback for queries that don't require results (updates, deletes, etc)
Merge branch 'VideoSprint40' into VID-1224
allow for null callbacks through the stack
VID-1224 Implemented asset model unit test
VID-1224 Fix parameter type
VID-1224 Updated tests to be more complete
VID-1224 Fix some spacing issues
VID-1224 More spacing issues. Bad variable name.
VID-1224 Changed this to an integration test

* Also tested loading a program
* Also updated some queries to fluent
VID-1224 Fixed some status returns
Merge pull request #2538 from Wikia/VID-1224

Vid 1224