Removes some sql related lag caused by too many clients connecting at once after a restart
(and other minor fixes to client sql logic)

Clients will now spread out their sql database connection logging and related ckey by ip/cid searching at world start so it doesn't all happen at once.
Fixes a minor bug with related ckey searching where only one would be returned.
Fixes a minor bug where related ckey searching would return the client's own ckey.
Feedback reporting now uses 1 insert query with mutiple rows
Rather then making a new query for each feedback item.
Each query can take between 25ms and 100ms, and this is a static per-query overhead, so removing the 60 or so needless querys will speed things up.