Perf and info box tweaks

- Don’t send TCP candidates (useless)
- Show ICE connect time
- Calculate setup time more accurately
- Make stats display more compact (less whitespace)
Make presubmit happy
More presubmit fixes
Remove unneeded line
Rework timing calculation to use events
More linting, blarg
Undo incorrect fix
Merge pull request #235 from GoogleChrome/apprtc-fast2

Perf and info box tweaks