new feature : online HELP

On each template, a "HELP" link has been added.
it opens a popup, filled with an help template.
the help template is in the help/ directory.
The help.pl files builds the online help using the name of the caller page (referer).

If the user clic on "help" when on page "admin/itemtypes.pl", the "help/admin/itemtypes.tmpl" is opened.
If the "help/admin/itemtypes.tmpl" does not exists, a default "sorry, no help on this topic" page is shown.

Works fine, but now, the big work has to be done : create the online help pages...

help.pl

@@ -0,0 +1,45 @@
+#!/usr/bin/perl
+use HTML::Template;
+use strict;
+require Exporter;
+use C4::Output;  # contains gettemplate
+use C4::Interface::CGI::Output;
+# use C4::Auth;
+use C4::Context;
+use CGI;
+
+my $query = new CGI;
+
+# find the script that called the online help using the CGI referer()
+
+my $refer  = $query->referer();
+$refer =~ /.*koha\/(.*)\.pl.*/;
+my $from = "help/$1.tmpl";
+
+my $template = gethelptemplate($from,"intranet");
+# my $template
+output_html_with_http_headers $query, "", $template->output;
+
+
+sub gethelptemplate {
+	my ($tmplbase) = @_;
+
+	my $htdocs;
+		$htdocs = C4::Context->config('intrahtdocs');
+	my ($theme, $lang) = themelanguage($htdocs, $tmplbase, "intranet");
+	unless (-e "$htdocs/$theme/$lang/$tmplbase") {
+		$tmplbase="help/nohelp.tmpl";
+		my ($theme, $lang) = themelanguage($htdocs, $tmplbase, "intranet");
+	}
+	my $template = HTML::Template->new(filename      => "$htdocs/$theme/$lang/$tmplbase",
+				   die_on_bad_params => 0,
+				   global_vars       => 1,
+				   path              => ["$htdocs/$theme/$lang/includes"]);
+
+	# XXX temporary patch for Bug 182 for themelang
+	$template->param(themelang => '/intranet-tmpl' . "/$theme/$lang",
+							interface => '/intranet-tmpl',
+							theme => $theme,
+							lang => $lang);
+	return $template;
+}

koha-tmpl/intranet-tmpl/default/en/help/admin/itemtypes.tmpl

@@ -0,0 +1,9 @@
+<!-- TMPL_INCLUDE NAME="help-top.inc" -->
+	<h1>Item types</h1>
+	<p>You can define as many itemtypes as you want.</p>
+	<p>Item types are useful for many things :</p>
+	<ul>
+		<li>Borrowers can search on itemtypes</li>
+		<li>Issuing rules are set for item types (and for borrower types / branches)</li>
+	</ul>
+<!-- TMPL_INCLUDE name="help-bottom.inc" -->

koha-tmpl/intranet-tmpl/default/en/help/nohelp.tmpl

@@ -0,0 +1,4 @@
+<!-- TMPL_INCLUDE name="help-top.inc" -->
+	<h1>Online Help</h1>
+	<p>Sorry, no help on this topic</p>
+<!-- TMPL_INCLUDE name="help-bottom.inc" -->