Remove moon.List and moon.GridList

moon.List is deprecated in favor of moon.DataList, and moon.GridList is
removed because GridList has been removed from layout library. Also
remove samples showing use of these.

Enyo-DCO-1.1-Signed-Off-By: Ben Combee (ben.combee@lge.com)
Update WIP moon.AudioPlayback kind, add sample

moon.AudioPlayback is broken because of the removal of moon.List.
This doesn't fix that, but it adds notes indicating that it's broken
and adds back a sample that can be used to test it when the control
is fixed in the future.

Enyo-DCO-1.1-Signed-Off-By: Ben Combee (ben.combee@lge.com)
Move HiglightSample to WIP status

Because of filtering changed in how enyo.Collection is handled,
this sample is broken. Move it to the WIP list until we get a new filter
implementation and can fix this to use that.

Enyo-DCO-1.1-Signed-Off-By: Ben Combee (ben.combee@lge.com)
Merge branch 'master' into remove-list-gridlist

Conflicts:
	CHANGELOG.md
	source/MoonScrollStrategy.js
Merge branch 'remove-list-gridlist'

Cleaned up some conflicts, tested with all samples, looks good.