Added url params arbr, asbr, vrbr & vsbr to apprtc.

Added url params arbr, asbr, vrbr & vsbr to apprtc demo to control audio
and video send/receive bitrate.
BUG=3166
Revert "Added url params arbr, asbr, vrbr & vsbr to apprtc."

Reason for revert: CL was committed to the main repo instead of a forked repo accidentally.

This reverts commit 14bf1877407661b31902f14cb5fd8ad472939982.
Format into a nice table; add IPv6/BUNDLE support
Add UI for IPv6 and BUNDLE control

Fix CSS for table as well
Fix column alignment, refresh bug
Revert 5461821..41fd52b

This rolls back to commit 5461821df267cd1d8f6c62b3446eb9d5d55ea9f3.
Revert "Revert 5461821..41fd52b"

This reverts commit 20da7282533e57a3c8778811324a02cb7690cb7a.
Update adapter.js
Merge pull request #6 from praveenkishor123/patch-1

Update adapter.js
Added url params arbr, asbr, vrbr & vsbr.

Added url params arbr, asbr, vrbr & vsbr to apprtc demo to control audio
and video send/receive bitrate.

BUG=3166
Merge remote-tracking branch 'upstream/master'
Use constraints to avoid CN. Tweak error msgs.

Use CreateOffer/Answer constraints to ensure that the SDP doesn't contain CN; remove obsolete code to do this manually.
Fix adapter.js symlink
Ignore PYC files
Add apprtc-juberti as distinct from googlechrome/apprtc
Merge branch 'master' of https://github.com/juberti/webrtc
Fix bug in mergeConstraints

This caused VoiceActivityDetection to get dropped.
Revert "Revert "Revert 5461821..41fd52b""

This reverts commit faa8fa770844a63444531e300d02c4139861d3df.
Revert "Add apprtc-juberti as distinct from googlechrome/apprtc"

This reverts commit 9d7291d8d8ca09ca8b376312cea72b7975bb96c0.
Modified apprtc code to handle url params arbr, asbr, vrbr & vsbr.

Follow up to the changes suggested by Justin/Ami.