Don't require zero-padding on episode numbers

[wfarner]

no_season will now match episode numbers < 10 when the value is not zero-padded.

Tests come up clean:

:::console
$ python all_tests.py
==================
STARTING - ALL TESTS
==================
this will include
- db_tests.py
- name_parser_tests.py
- pp_tests.py
- scene_helpers_tests.py
- snatch_tests.py
- tv_tests.py
.............................................
----------------------------------------------------------------------
Ran 45 tests in 8.343s

OK