Bug 36064: (follow-up) Activate correct tab

Bug 36064: (follow-up) Activate correct tab

This patch makes a change to the JavaScript on waitingreserves.pl so
that the correct tab is activated if you follow the "Holds with
cancellation requests" link on the home page.

The page has code to activate the last viewed tab, but I've modified it
so that if there is a location hash ('waitingreserves.pl#tab') the tab
specified in the hash is selected instead of the last used tab.

If there is no location hash the last active tab will be activated.

I've also corrected the location hash in the link on the home page.

To test, apply the patch and follow the "Holds with cancellation
requests" link. The "Holds with cancellation requests" tab should be
active.

Click a different tab, e.g. "Holds waiting." Go the the circulation home
page, then click the link for "Holds awaiting pickup." The tab you
selected should be active.

Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>