Bug 11310: update the XSLT for the Bootstrap theme

When the Bootstrap theme was started, the XSLT directory
was copied over from the prog theme.  However, it was not
kept up to date with respect to changes to prog's XSLT.

This patch rectifies the problem by copying over the
current state of prog/en/xslt to bootstrap/en/xslt.  As
a consequence, the following bugs or enhancements should
now be reflected in the Bootstrap theme:

* 6886
* 10905
* 10465
* 10564
* 10793
* 10218
* 6594
* 9820
* 10745
* 6553
* 10218
* 10284

To test:

[1] Apply the patch and ensure that OPACXSLTDetailsDisplay
    and OPACXSLTResultsDisplay are set to 'default' and that
    OPAC theme is set to 'bootstrap'.
[2] Ensure that OPAC results and bib details look OK.
[3] To be really thorough, run through the test plans for the
    other bugs referenced by this patch.

Signed-off-by: Galen Charlton <gmc@esilibrary.com>
Signed-off-by: Chris Cormack <chris@bigballofwax.co.nz>
Signed-off-by: Jonathan Druart <jonathan.druart@biblibre.com>
Signed-off-by: Galen Charlton <gmc@esilibrary.com>
(cherry picked from commit cd02934c6baf9d237b17f8348c83bf7e248d5551)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>
Bug 11772: Show warning on About page:System information if no active currency is defined

This patch displays a warning on the About page when no active currency
is defined.

Test plan:
1)
Make sure that no currency is defined as active
(Home › Administration › Currencies & Exchange rates › Currencies)
2)
Go to Home › About Koha > System information
Result: No warning issued.
3)
Apply patch and reload About page
Result: Warning issued.

Signed-off-by: Chris Cormack <chris@bigballofwax.co.nz>
Signed-off-by: Jonathan Druart <jonathan.druart@biblibre.com>
Signed-off-by: Galen Charlton <gmc@esilibrary.com>
(cherry picked from commit 9e01b7c1d6c32dfd9ae0af4e708ca598303fbcf1)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>
Bug 11772: (follow-up) make warning about no active currency a link to currency setup page

This patch standardizes the name of the currency and exchange rates
administration page (although I note that the breadcrumbs on that
page are inconsistent) and makes it a link.

Signed-off-by: Galen Charlton <gmc@esilibrary.com>
(cherry picked from commit 4b4839e752d88c1ccba5f8c9a1296302747c0c6b)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>