Bug 22812: Fix GROUP BY in checkrouting

Bug 22812: Fix GROUP BY in checkrouting

On the way, let fix this error
DBD::mysql::st execute failed: Mixing of GROUP columns
(MIN(),MAX(),COUNT(),...) with no GROUP columns is illegal if there is
no GROUP BY clause [for Statement "SELECT count(routingid) routingids
FROM subscription LEFT JOIN subscriptionroutinglist

Test plan:
Create a routing list, search for subscriptions
In the action list you should see "Edit routing list (1)" or "New
routing list"

Signed-off-by: Liz Rea <wizzyrea@gmail.com>
Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Michal Denar <black23@gmail.com>
Signed-off-by: Michal Denar <black23@gmail.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>