Bug 17103 - Google API Loader jsapi called over http

This patch replaces the hardcoded protocol ("http") from the URI with
https since that is what Google defacto uses to serve JS resources
Prevents MIXED CONTENT failure, allowing GoogleIndicTransliteration
to function correctly when used in SSLized OPACs.

Test plan
---------

1/ Make sure your OPAC is being served both over HTTP and HTTPS
2/ Set GoogleIndicTransliteration syspref to "Show"
3/ Access the OPAC over http, Google transliteration element will
   show up in masthead searchbox.
4/ Access the OPAC over https. The element will not show. Console
   will show MIXED CONTENT error and failure of google loader.
5/ Apply patch. Repeat steps #3 and #4 again. Now in both cases
   GoogleIndicTransliteration will work.

Signed-off-by: Mark Tompsett <mtompset@hotmail.com>

Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>

Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
(cherry picked from commit 6fcd32a75c)
Signed-off-by: Frédéric Demians <f.demians@tamil.fr>
(cherry picked from commit 3a5e20809c)
Signed-off-by: Julian Maurice <julian.maurice@biblibre.com>

koha-tmpl/opac-tmpl/bootstrap/en/includes/opac-bottom.inc

@@ -209,7 +209,7 @@ $.widget.bridge('uitooltip', $.ui.tooltip);
     </script>
 [% END %]
 [% IF ( GoogleIndicTransliteration ) %]
-    <script type="text/javascript" src="http://www.google.com/jsapi"></script>
+    <script type="text/javascript" src="https://www.google.com/jsapi"></script>
     <script type="text/javascript" src="[% interface %]/[% theme %]/js/googleindictransliteration.js"></script>
 [% END %]
 [% IF persona %]