Add MyAvatar subclass. For functions such as render() and simulate(),
they have been edited so that there are MyAvatar and Avatar specific
versions in their respective classes. isMyAvatar() has been removed.
Merge remote-tracking branch 'upstream/master'

Conflicts:
	interface/src/avatar/Avatar.cpp
	interface/src/avatar/Avatar.h
Add MyAvatar and resolve merge conflicts.
Remove unused setNoise() function in MyAvatar.h that was causing
build error.
Remove unnecessary comments and spaces.
Style and spacing changes in MyAvatar/Avatar classes.
Magic number removal...
Merge pull request #878 from LionTurtle/master

Add MyAvatar class, subclass of Avatar class.