MySQL Bugfixes

SQLManager :
1) Additional support added for not using a password to connect to the
SQL database.
2) Changed 'timestamp' in uselogs to 'date_issued'.
3) Missing comma in usernames table setup.
4) isFirstLoginSet boolean needed to be reversed, when altering table on
login.
5) date_issued cannot be null. Fixed in addUsageLog (and with it, a new
date string.
6) addNewUsername / addNewAddress made public.
7) usernameIsPreviousUsername / addressIsPreviousAddress made public.
8) playerdata replaced with usernames / addresses in
usernameIsPreviousUsername / addressIsPreviousAddress.
9) Error where doesRecordExist was returning reversed fixed.

String sent to addUseLog was altered, to have spaces after the function
added to AddPlayer / DeletePlayer / RemovePlayer / ViewPlayer.

usernameIsPreviousUsername check, and addNewUsername method added to
AddPlayer / RemovePlayer / ViewPlayer.
Version Update