gitweb: Normalize searchbar font size

Currently, searchbar font was as big as the page heading font, because
font-size was made relative - but to the parent element, which was for some
reason indeed page_header. Since that seems to be illogical to me, I just
moved the div.search outside of div.page_header. I'm no CSS/DOM expert but
no adverse effects were observed by me.

Signed-off-by: Petr Baudis <pasky@suse.cz>
Signed-off-by: Junio C Hamano <junkio@cox.net>

gitweb/gitweb.perl

@@ -1903,6 +1903,8 @@ sub git_header_html {
 		}
 		print "\n";
 	}
+	print "</div>\n";
+
 	my ($have_search) = gitweb_check_feature('search');
 	if ((defined $project) && ($have_search)) {
 		if (!defined $searchtext) {
@@ -1932,7 +1934,6 @@ sub git_header_html {
 		      "</div>" .
 		      $cgi->end_form() . "\n";
 	}
-	print "</div>\n";
 }
 
 sub git_footer_html {