Moving a lot of stuff to mayan-server.

The mayan gem will simply be a calendar with easy access for external
calendar integration. This gem should be able to be used as a calendar
in it's own right. The mayan-server (pending a better name) will handle
getting other data from APIs like facebook and google, and syncing them
with mayan. I'm going to avoid using the term server because they will
both be able to sit on a port. This is still very much a work in
progress and likly to change.