[OE-5174] Add finding relation to common oph diag (incomplete)
Merge branch 'feature/glaucoma-2.1' of github.com:openeyes/OpenEyes into feature/glaucoma-2.1

Conflicts:
	protected/models/CommonOphthalmicDisorder.php
[OE-5174] Fix generic admin to support finding lookup
Merge branch 'feature/glaucoma-2.1' of github.com:openeyes/OpenEyes into feature/glaucoma-2.1