Issue #7 : Add characters when adding keys

Added importChars() function to EVECredential, which imports all characters
attached to that key.

Whenever a key is added via the GUI, importChars() is called.

Also added "get_or_create" type functions to EVEAlliance and EVECorporation.
Issue #7: Remove wrappers and unwanted imports

Removed the one-line wrappers.
Remove unwanted import

Also removes a debugging-print that I left in
Merge branch 'master' of https://github.com/bravecollective/core into add_characters

Conflicts:
	adam/auth/controller/key.py
Merge pull request #30 from Byetsniv/add_characters

Now imports character data when adding EVE API keys.  Fixes #7.