ClanHQ hospitals are now only accessible by robed clan members
Impedimenta and Swamp can now co-exist

Fixes #13
Changed entering/exiting desert

Fixes #10 - You will now enter the desert at a random spot.
To exit the desert you need to find a magical portal that has a chance
to either send you to Hogwarts or to another random spot at the desert.

The magical portals move around and sort of blend with sandstorm, they
can be noticed by the blue magical sparkles.