Bug 10592: fix MARC21 006/008 cataloging plugins

Move the XML and XSD data files so that access to them
(particularly the XML files) is not blocked by the Apache
configuration change introduced by the patch for bug 9812.

To test, after applying the patch.

[1] Open a MARC21 bibliographic record in the cataloging editor.
[2] Click on the plugin link for the 008 field.  Verify that
    that the form for all of the fixed field positions is displayed,
    and verify that you can change the type of material.
[3] Repeat step 2 for the 006 field.
[4] Verify that there are no entries in the Apache error log that contain

client denied by server configuration: {...}/cataloguing/value_builder/marc21_field_008.xml

or

client denied by server configuration: {...}/cataloguing/value_builder/marc21_field_006.xml

Signed-off-by: Galen Charlton <gmc@esilibrary.com>
Signed-off-by: Chris Cormack <chris@bigballofwax.co.nz>
Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Also verified translation of those plugins still works correctly.

Signed-off-by: Galen Charlton <gmc@esilibrary.com>
Bug 10592: fix display of favicon

Move the favicon files for OPAC and staff so that they are not
blocked by the Apache configuration change introduced by the
patch for bug 9812.

Note that this patch makes the favicon customizable by theme,
not both theme and language.

To test, after applying the patch.

[1] Open pages in the OPAC and staff client.  Verify that the favicon
    is displayed in the usual place in your web browser.  Specific pages
    to test include

    - circulation receipts and slips
    - help
    - lists view
    - web-based self-checkout

[2] Verify that the Apache logs do not contain entries like this:

client denied by server configuration: {...}/prog/en/includes/favicon.ico

Signed-off-by: Galen Charlton <gmc@esilibrary.com>
Signed-off-by: Chris Cormack <chris@bigballofwax.co.nz>
Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Verified that the favicon displays correctly. Also
tried changing favicons for staff and OPAC using the
system preferences for those. This still works, where
the system preferences are correctly supported in the
templates.

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