Updated `account_data` upgrade files

to avoid issues as demonstrated by report 7824 http://hercules.ws/board/tracker/issue-7824-exp-and-drop-rates-in-lat/
Special Thanks to Yommy!

Signed-off-by: shennetsind <ind@henn.et>
Merge branch 'master' of https://github.com/HerculesWS/Hercules