Fix of btn, primary and important hover state and add tabbed container sources(not complete).

See details over here
https://jira.tm.tmcs/jira/browse/AUTHOR-4917
https://jira.tm.tmcs/jira/browse/AUTHOR-4918
https://jira.tm.tmcs/jira/browse/AUTHOR-4919

Sorry for this but you will find trace of tabbed container, I did not start working on develop branch when commit 05ac377, I will be careful next time.

Vince