Moved operations to timetable/ (from timetable/management/commands)
Added a command to update all calendars manually
parser is moved to timetable/ instead of being in timetable/management/commands
Removed updater.py, since its functions are already performed by other modules
Created calendars will have the term and academic year appended to its name.

Bear in mind that this will only be correct as long as the webapp only shows subjects that are taking place in the term and year set in settings.py