added pictures because i hate all those 404 errors in the log. and i like
chuck norris, too. ROUNDHOUSE KICK!
show details of a talk in a modal dialog instead of toggling the details
on the main tracks view
clean up unneeded stuff
added a test for the talk view
nicer layout for profile pictures; only talks with abstract are clickable
Merge pull request #30 from SchweizerischeBundesbahnen/feature/mfr/talkdetailview

Feature/mfr/talkdetailview
Merge branch 'develop' into feature/mfr/mobileimages
fixed test
Merge pull request #31 from SchweizerischeBundesbahnen/feature/mfr/mobileimages

Feature/mfr/mobileimages
Update README.md
Merge branch 'develop' into e2e-tests

Conflicts:
	app/scripts/controllers/TrackController.js
	app/views/tracks.html
	test/unit/TrackControllerTest.js