Initial Work on the calendar interface

+ Added several views
+ The list viewing works to some extent.
+ Links and view control is still missing. This can not be implemented
until the user system is in place...
Further work on Calendar

+ Monthly view
+ Primitive daily view
+ A primitive Event class added. A class from the Models.Event directory
should be used.
- Needs updates in other areas, especially Events.
Some details for calendar view

+ Added max length of event names in calendar
+ Added 4px frame around current date
Started work on the Event models