Bug 11715: Set the default of authnotrequired = 0 in get_template_and_user

To test:

Verify that pages in the OPAC and staff interface display correctly.

Note that there are cases where 'authnotrequired' was not passed
at all to get_template_and_user, so there may be pages that start
requiring authentication.  Whether that is correct or not depends
on context.

Follow up patches are to remove all the unnessecary setting of this
value, so that the only places we set are when we do want
authnotrequired=1

Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Signed-off-by: Galen Charlton <gmc@esilibrary.com>

Signed-off-by: Jonathan Druart <jonathan.druart@biblibre.com>
Bug 11715: require authentication for the cataloging Z39.50 search

To test:
1/ go to /cgi-bin/koha/cataloguing/z3950_search.pl when you are not
logged in, notice no log in is enforced
2/ Apply patch
3/ go to /cgi-bin/koha/cataloguing/z3950_search.pl notice you now need
to login

Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Signed-off-by: Galen Charlton <gmc@esilibrary.com>

Signed-off-by: Jonathan Druart <jonathan.druart@biblibre.com>
Bug 11715: require authentication for various staff scripts

To test:

[1] Verify that item record creating and editing during the
    acquisitions process continues to work.
[2] Verify that calling  services/itemrecorddisplay.pl without
    a valid user session fails.
[3] Verify that authentication is required for making a new
    order from a suggestion, transferring an order, doing a
    Z39.50 search from acquisitions, displaying the record
    card view in the staff interface, and running the till
    reconciliation report (/cgi-bin/koha/reports/stats.screen.pl)

Signed-off-by: Galen Charlton <gmc@esilibrary.com>

Signed-off-by: Jonathan Druart <jonathan.druart@biblibre.com>
Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Verified all changed scripts are not accessible witout a valid
user session, but are with one.
Bug 11715: Update POD for get_template_and_user

If flagsrequired is set, authnotrequired should be 0.

Signed-off-by: Jonathan Druart <jonathan.druart@biblibre.com>
Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>