Ensure delegate profile is cleared from cache, so that permissions that
is granted shows up immediately.
Added switch back to me option.
Fixed unit test
Changed name of realOrcid property in OrcidProfileUserDetails to just
orcid, because was misleading with new way of switching user.
Added page to show all delegate permissions granted by other users.
Limited manage proxies drop-down to 10 users, and added link to new
delegators page.
Leave delegates hidden feature switched on when switching users.
Fixed problem with dropdown going behind other elements on page, when
mouse is moved away from menu area.
Check if delegate already exists in user's record before adding.
Improved search for delegates, particularly search for and ORCID iD.
Merge pull request #870 from ORCID/delegatesPart2

Delegates part 2