only take one job at a time per worker

Netdisco/lib/App/Netdisco/Daemon/Worker/Common.pm

@@ -20,11 +20,11 @@ sub worker_body {
 
   while (1) {
       prctl sprintf 'netdisco-daemon: worker #%s %s: idle', $wid, lc($type);
-      my $jobs = [ $self->{queue}->dequeue(1) ]; # FIXME multiple take, take type, thaw
 
-      foreach my $job (@$jobs) {
+      my $job = $self->{queue}->dequeue(1);
       next unless defined $job;
-          $job = schema('daemon')->dclone( $job );
+
+      $job = schema('daemon')->dclone( $job ); # TODO stop using DBIC
       my $target = $self->munge_action($job->action);
 
       try {
@@ -46,7 +46,6 @@ sub worker_body {
       $self->close_job($job);
   }
 }
-}
 
 sub close_job {
   my ($self, $job) = @_;

Netdisco/lib/App/Netdisco/JobQueue.pm

@@ -101,10 +101,6 @@ jobs from the queue.
 
 =head2 id (auto)
 
-=head2 type (required)
-
-=head2 wid (required, default 0)
-
 =head2 entered
 
 =head2 started