Add  mozconfig file for mobile android China Edition.
Topsite grid, search engine, tracking.
Add cmmanager component to send active and live message
Update assets files.
Merge branch 'wzhu/fennec_20_cn' of github.com:yxl/mozilla-central into wzhu/fennec_20_cn

Conflicts:
	mobile/android/base/cmhomepage-assets/default-pinned-sites.json