Core: Better fix for stuck at "Retrieving character list"
Core: Better fix for stuck at "Retrieving character list"

also fix instance lock always delayed and never expiring

close: #966

jokerlfm/azerothcore-wotlk,azerothcore/azerothcore-wotlk,mygithome002/azerothcore-wotlk,Helias/azerothcore-wotlk,Nefertumm/azerothcore-wotlk,jokerlfm/azerothcore-wotlk,azerothcore/azerothcore-wotlk,Helias/azerothcore-wotlk,Helias/azerothcore-wotlk,azerothcore/azerothcore-wotlk,jokerlfm/azerothcore-wotlk,Nefertumm/azerothcore-wotlk,Helias/azerothcore-wotlk,mygithome002/azerothcore-wotlk,Nefertumm/azerothcore-wotlk,ShinDarth/azerothcore-wotlk,Helias/azerothcore-wotlk,azerothcore/azerothcore-wotlk,Nefertumm/azerothcore-wotlk,azerothcore/azerothcore-wotlk,jokerlfm/azerothcore-wotlk,mygithome002/azerothcore-wotlk,jokerlfm/azerothcore-wotlk,ShinDarth/azerothcore-wotlk,Nefertumm/azerothcore-wotlk,ShinDarth/azerothcore-wotlk,Helias/azerothcore-wotlk,azerothcore/azerothcore-wotlk,Nefertumm/azerothcore-wotlk,ShinDarth/azerothcore-wotlk,mygithome002/azerothcore-wotlk,mygithome002/azerothcore-wotlk,mygithome002/azerothcore-wotlk,jokerlfm/azerothcore-wotlk