ported bash plugin tests to python
mock testing Command to livestatus and command_file
more command tests
function renaming
pep8 convertion
Better errorhandling on looking up servicegroups

Affects #58
Merge pull request #57 from pall-valmundsson/unittest-mock-commands

mock testing Command to livestatus and command_file

That's sweet, i have been dreading this myself. Thanks a lot.
Merge pull request #56 from pall-valmundsson/unittest-migration

ported bash plugin tests to python
Parser: Fix unhandled traceback if invalid use is specified.

Fixes: #53
PluginHelper: Do not allow setting return status out of bounds.

status = 127 will be changed to unknown
Fixes #52
git.show() implemented