A little upgrade to the HTML test page:
A little upgrade to the HTML test page:

* Signaling messages are added to the log with a '+' / '-' sign to expand/collapse the message.  This makes the log easier to read and each message can be read separate from the others.
* Loopback enabled by default since that's the most common use case.
* Wrapped some lines at 80 for easier future diffing.
Review URL: http://webrtc-codereview.appspot.com/214001

git-svn-id: 917f5d3ca488f358c4d40eaec14422cf392ccec9@711 4adac7df-926f-26a2-2b94-8c16560cd09d

ShiftMediaProject/libilbc,mwgoldsmith/ilbc,ShiftMediaProject/libilbc,mwgoldsmith/ilbc,TimothyGu/libilbc,mwgoldsmith/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,mwgoldsmith/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,mwgoldsmith/libilbc,mwgoldsmith/ilbc,ShiftMediaProject/libilbc,mwgoldsmith/libilbc,TimothyGu/libilbc,mwgoldsmith/ilbc