Room updates

Rooms can be managed from the Admins; Rooms can now have maps; Students can update their room whenever they want; Upon enqueuing, autoload the map for the room so students can enter where they are sitting

Requires the following database change:

alter table queue.room add column `map_file_path` varchar(255);
INSERT INTO lab_rooms (lab_id,rooms_id) SELECT lab.id,1 FROM lab;
UPDATE request SET room_id = 1

room.sql

Fixes #57 (closed) Fixes #104 (closed) Fixes #79 (closed) by removal of UI