feat(login): make forwarding of loginlink possible

If it contains a hashbang it will be broken by some email clients.

See https://trello.com/c/XpIRdn4O
fix(cache): last-modified-date is always present
fix(login): email change is now possible

See https://trello.com/c/3pr0Swch
feat(charity): reorder meta menu links
test(registry): fix test for registrar list