Merge pull request #132 from yapapaya/master

A couple of Bug Fixes
Merge pull request #136 from faishal/master

Fix issues #133 #134
Added actions for adding extra media fields and saving them and added get_thumbnail_id function
Merge branch 'master' of github.com:rtCamp/buddypress-media
Merge pull request #138 from joshuaabenazer/master

Added extra actions.
Fixed Load More on Groups
Merge pull request #140 from yapapaya/master

Fixed Group Load More
Merge branch 'master' of https://github.com/rtCamp/buddypress-media