Bug 14903: Remove C4::Dates from circ/circulation.pl (and more)

Bug 14903: Remove C4::Dates from circ/circulation.pl (and more)

Patch to remove deprectated C4::Dates from:
- circ/circulation.pl
- C4/Circulation.pm
- koha-tmpl/intranet-tmpl/prog/en/modules/circ/circulation.tt

To test:
- Apply patch
- Go to the checkout site (Home > Circulation > Checkouts)
- Verify that data displays properly (including for users with a card
  that expires in the  near future, see syspref 'NotifyBorrowerDeparture')
- Search for regressions
- prove -v t/db_dependent/Circulation.t

(Amended following comment #9 / #11  25.10.2015 /mv)

Signed-off-by: Mirko Tietgen <mirko@abunchofthings.net>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>