Implement bandwidth monitor
Wrap video within div
Show webrtc stats by appending #debug to URL
Monitor framerate as well
Support aspect ratio in fluid layout
Support requesting resolution, framerate and bandwidth
Fix bandwidth from sdp message
Make resolution and framerate into soft constraints
Add bandwidth management in admin
Add 'type2' field to Room model

The original 'type' field is used to specify whether the room is of
audio, video or data type. Scheme of this field is character array of
fixed length, which is not very scalable. It is more appropriate to use
integer storing this information.

However, since alter table of sqlite3 does not support changing scheme
of fields, alembic could not automatically generate the migration
script. In order for alembic to work properly with minimum effort, a new
integer field, 'type2', is created to store the type of room.
Support HD video by adding '?hd=1' to room url
Fix unit tests for room (used to be conf)