Bug 18673: News author does not display on staff client home page

News authors do not display on staff client homepage, independently of
syspref 'NewsAuthorDisplay'. This patch fixes the issue.

To verify:
- Create news with display location 'All'
- Set syspref NewsAuthorDisplay to 'Staff client only' or 'Both OPAC and staff client'
- Go to staff client
- Verify that news author does not appear (but it should)

To test:
- Applly patch
- Verify that news author is displayed as expected

Followed test plan works as intended
Signed-off-by: Alex Buckley <alexbuckley@catalyst.net.nz>

Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>

koha-tmpl/intranet-tmpl/prog/en/modules/intranet-main.tt

@@ -1,3 +1,4 @@
+[% USE Koha %]
 [% INCLUDE 'doc-head-open.inc' %]
 <title>Koha staff client</title>
 <link rel="stylesheet" type="text/css" href="[% interface %]/[% theme %]/css/mainpage.css" />