This is more of a semantic change than anything else. GcalSubscriber
will gradually take on GcalView interface and that's why I'm adding the
View suffix.
As explained before, this is only intended to keep a reference to the
GcalManager instance of the application.
Misc: fixed some documentation and whitespace issues
First approach to GcalYearView implementation.
The code is missing yet a lot of the others views functionality,
well, almost every view is missing something, but...