[#81130804] pull select2 into project
[#81130804] change participants to select2
Merge branch 'master' into select2
[#81130804] call addParticipant on selected
[#81130804] persist and display selected participants
[#81130804] ability to remove participants
[#81130804] fix bug where you cannot remove just added participant
[#81130804] fix string vs num ember find
[#81130804] fix qunit tests
[#81130804] Fix broken select2 specs, event stream now works with select2
[#81130804] event stream create and destroy working perfectly!!!!!!!
[#81130804] user filtering is much cleaner

- no more ugly promises for local data on select2
- use paper id instead of task id for user roles
- clean up component more
- remove user search for now
Merge branch 'master' into select2
Try ihat_supported_formats on init
[#81130804] Clean up selection component, add teardown
[#81130804] Move test css to test directory
[#81130804] Create select2 component test

- stop monkey patching server results for test data
[#81130804] clean up tests that load dropdown data
[#81130804] Stop changing participants on front end with capybara
Merge remote-tracking branch 'origin/master' into select2