same candidate solution
One candidate per time slot constraint
Added oneCandidatePerOppertunityConstraint
sorts candidates by interest
Merge pull request #274 from conorfennell/master

constraints
Merge pull request #275 from FCStrike/dev

Add opt out choice to user account page
Merge pull request #276 from FCStrike/dev

Add opted out to candidates all view
Update admin opps
Merge pull request #277 from jgho/adminOppUpdate

Update admin opps