Added `sniffer` and `mock` to `fab develop`
`fab develop` now also creates a test config.
HTTP tests skipped until test_manager is done
Unit tests for the user manager are now passing.
Test added for "ReleaseManager.get"
Added a test for Release.get_or_add
New test for ReleaseManager.create.
Tests for remaining managers added.
Fixed tests for the FileManager
Bump.