Beginning to get this trello-hipchat thing into a nicer format; several things, including:
- don't put dashes in file names, because then python can't handle them easily
- config is just a python file, instead of having to do execfile
- you can (to some extent) configure which actions to report
- factored out the actual message templates into a separate file for easy access and modifiability
- added docstrings and comments, and renamed some things to be less inscrutable
- and probably other stuff too