Add two triggers for button override.

It's a quite simple trigger.
I thought I could use the Activity integration but, I wasn't sure that it was the right place.
Kunena30/Joomla30 Backend: Added top level view titles.
Merge pull request #1306 from coder4life/master

Kunena30/Joomla30 Backend: Added top level view titles.
Merge pull request #1194 from obsidev/TriggerButtons

Add two triggers for button override.