Adding qc_ngi submodule
Fix Charon access bug in classes.py, add the all var to __init__.py for exporting with *
Added with_config decorator class
with_config -> with_ngi_config, implement in conductor __init__.py functions
Reorganize: move everything in conductor.__init__.py to other, named files. Everything is now broken; fix by adding import statements.
Decorate a bit
Change get_shelve_database to a context manager. Fixes #44
Merge pull request #43 from mariogiov/devel

with_ngi_config decorator to autoload config file from default location(s) if not given; fix some bugs relating to Charon; formatting