Changing name for new "private" configuration attribute to "is_private"

This allows for better integration with other api clients that may be using a language in which "private" is a key word. Keeping it has "private" will obviously cause serialization and deserialization errors into and from object in other languages.

Also, setting the mountpoint to private on line 529 in the janus streaming plugin was missing(did not reference the moutpoint and only set private equal to itself...which does nothing...)

The other commits seen in this pull request are stupid merge pushes I made over time that github is not smart enough(or I am not) to not care about, but there are no code changes there.