Fixed test_parseURI function, renamed test_printer.py to test_printermanager.py
Renamed test_mockrequestor.py to mockrequestor.py, as mockrequestor.py contains class, not tests
Fixed getCUPSPrintersForAccount printermanager function, fixed unit tests
Removed unused code and unit tests (some to be moved to printer class specific unit tests)
Enable coveralls integration
Added missing pyopenssl for travis-ci
Removed redundant --cov arg
Fix coverage run
Run travis-ci unit tests from git clone instead of /usr/local
Exclude testing/listdrivefiles.py from test coverage report