TT#71356 Add Q-Value column in Registered Devices table

The value is taken from the kamailio location table and
it is useful to know which is the device with highest
proiority.

Change-Id: I978c7d8da48a84fa537c941e486016881fc03afb

lib/NGCP/Panel/Controller/Subscriber.pm

@@ -2595,6 +2595,7 @@ sub master :Chained('base') :PathPart('details') :CaptureArgs(0) {
         { name => "user_agent", search => 1, title => $c->loc('User Agent') },
         { name => "contact", search => 1, title => $c->loc('Contact') },
         { name => "expires", search => 1, title => $c->loc('Expires') },
+        { name => "q", search => 1, title => $c->loc('Q-Value') },
     ]);
     $c->stash->{capture_dt_columns} = NGCP::Panel::Utils::Datatables::set_columns($c, [
         { name => "timestamp", search => 1, title => $c->loc('Timestamp') },