Implemented a crude connections system between users
Made a working version of the connection system where users can visit each others profiles to connect and send requests, approve and ignore requests and delete connections.
Finishing a lesson session now automatically connects all the participants
Added a roster to the course page and changed the text from hide to done in the editing of connections
reverted some changes in the profile connections
Made it so that the roster and connections appear as images instead of lists
Added a small margin on top of the popover links
Moved the rosters page to the course show page
Changed the notes so it is now an icon
Adressed some issues concerning connection notifications
Changed the buttons on the profile page
Merge branch 'connections'
Merge branch 'master' of https://github.com/Paerhati/Teach2Learn