Bug 24230: fix intranet_js plugin hook before body end tag

Bug 24230: fix intranet_js plugin hook before body end tag

The plugin hook intranet_js is after body tag in intranet-bottom.inc :
    </body>
[% KohaPlugins.get_plugins_intranet_js | $raw %]
</html>

It must be before like in opac-bottom.inc

Test plan :
1) Install a Koha plugin with intranet_js hook, like KitechenSink
2) Go to an intranet page
3) Look at source of the page to see plugin code is before body end tag

Signed-off-by: Nicolas Legrand <nicolas.legrand@bulac.fr>
Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>