Massive patch to catch up to ucw_dev

This Patch breaks backwards compatability in a number of ways.

** None of the presentation stuff is exported anymore. UCW now exports the same symbols, and LoL is moving away from the presentation system anyway.
** The ajax stuff is broken and will soon be removed completely in favour of some dojo stuff i've got.

This makes it difficult to create your own components for use with Mewa. The ContextL based system is coming soon.

darcs-hash:20051206063950-5417e-35fe4437c7bd94ccbe149513709d48470c2c9c45.gz