Heavy work on code auditing and robustness

- Opened up chat interface to enable shortcuts to menu, winding etc
- Renamed the old MistressList to controllers and rebuild cleanly
  for every new session.

Plus assorted other bugfixes in particular to handlers which did not
confirm that they were processing a valid command before acting upon
it.
Merge branch 'Development' of github.com:emmamei/cdkey into Development

* 'Development' of github.com:emmamei/cdkey:
  Minor changes - and fixed dup code
  Added doll type to xstats
  Very minor updates; removed excess code
  Added messages and fixed no-RLV ops
  Debugging code for problemsolving.
  more comments and clarity

Conflicts:
	src/ChatHandler.lsl