Added button and modal to display result. Fixes #81
Changed relational function names to singular
Added js to pull reason from link data
Changed mode of indicating tests with rejected specimen
Added realistic rejection reasons to seed data.
Changed test.details view to show the specimen rejection reason. Removed button.
Spruced up the test.details view.
Merge pull request #82 from ilabafrica/rejection-reason-button

Rejection reason button