AdvancedBan [1.7-1.15] v2.1.8 | Command fixes & UTF-8

[+] (Re)introduced /systemprefs & /tempipban command
[~] Enforced UTF-8 for all config files. You can now use UTF-8 symbols without escaping them \^O^/
[~] Fixed /unpunish command
[~] Fixed /warns command
[~] Fixed IP Ban being displayed as a normal ban.
[~] Fixed reasoned layouts
[~] Fixed time calculation (Time Layouts)
[~] Patched small displaying issues

Required action: none

Note: An WarningsOwn: section got added to the Messages.yml (Should be added automatically when updating)