Fixes some "erros" in the database system

Replaces erro_ with a configurable table prefix system
Defaults to erro_ if not configured, but configuration files default to empty string

~~Warning: tested while drunk and high, so.. ya.~~ did some sober testing, seems to be working fine

Also: Some highlights for peoples I think might be excited:

@Rockdtben @Cheridan @MrPerson @Aranclanos @Ikarrus @Giacom @Miauw62