update like + server code
add isLiked
Add Like, report.
Merge remote-tracking branch 'origin/version-0.3' into version-0.3

Conflicts:
	www/js/controllers/chat-ctrl.js
comment code
Merge remote-tracking branch 'origin/version-0.3' into version-0.3

Conflicts:
	www/js/controllers/chat-ctrl.js