merge webservices_ds_slid() and webservices_ds_count(), if slid isset then show not just the status
check $uid and field flag_deleted, only non-deleted messages are allowed to be retrieved
to save queue_code in table playsms_tblSMSOutgoing
add new param queue for ta=ds to check sms status when smslog_id is zero but queue_code is exists
update webservices for delivery status (ta=ds) with query to slid, queue, dst, src, datetime, c and last