Switched plugin Taggingjs for Tag-it, and added JQueryUI

Tag system should be working now

Signed-off-by: Emiliano Lippolis <emilipo@gmail.com>
Various changes in room_submit

Change tagit containers to use name attribute instead of id.
Dinamically disable accessPassword and scheduledTime inputs.
Use validation constraints in datetimepicker.
Some fields renames.
Reorganize room_edit code
Add Room attributes documentation
Add some TODOs
Implements delete button functionallity in room list
Implements calendar button in room list
Reduce the amount of crap in room_page