PINES GALILEO TPAC link and auth redirector

PINES GALILEO TPAC link and auth redirector

* adds a GALILEO link in the footer template
* adds a new TPAC URL target for /eg/opac/galileo, which redirects the
  user to the GALILEO URL, ensuring the user is first logged in.

Signed-off-by: Bill Erickson <berick@esilibrary.com>
Conflicts:
	Open-ILS/src/templates/opac/parts/footer.tt2

PINES/GALILEO avoid auth redirect within library

If the physical_loc is set, indicating the patron is physically at a
branch (via IP redirect), link directly to the GALILEO site with no
authentication pass-through.  GALILEO does not requires PINES auth
if the client is coming from a known IP address.

Signed-off-by: Bill Erickson <berick@esilibrary.com>
Conflicts:
	Open-ILS/src/templates/opac/parts/footer.tt2

Sadly, GALILEO/EBSCO does not use HTTPS, so this will create errors for patrons who authenticate via PINES.  Reverting to HTTP.