Bug 10425 - Help page missing for Local Use preferences

When viewing Local Use system preferences tab, the help button will lead to an error page.
This is because Local Use tab uses not the same script has other tabs : systempreferences.pl.

This patch adds help/systemprefences.tt

Test plan :
- Go to Local Use preferences : /cgi-bin/koha/admin/systempreferences.pl
- Click on Help link (at right top)
- See you get the same page as other preferences tab help

Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Galen Charlton <gmc@esilibrary.com>
(cherry picked from commit 0e0a1a61a6)
(cherry picked from commit ff9638d815)
Signed-off-by: Bernardo Gonzalez Kriegel <bgkriegel@gmail.com>
(cherry picked from commit ff9638d815)

koha-tmpl/intranet-tmpl/prog/en/modules/help/admin/systempreferences.tt

@@ -0,0 +1,13 @@
+[% INCLUDE 'help-top.inc' %]
+
+<h1>Local Use System Preferences</h1>
+
+<p>System preferences not defined in other tabs</p>
+
+<p>Some may have been defined just for your library.</p>
+
+<p>Always contains <i>Version</i> preference, <strong>do not change it manually</strong>
+
+<p><strong>See the full documentation for System Preferences in the <a href="http://manual.koha-community.org/3.12/en/administration.html#globalsysprefs">manual</a> (online).</strong></p>
+
+[% INCLUDE 'help-bottom.inc' %]