Add support for offline players

Add support for offline players so you can retreive the group of an offline
player.
Add command 'info'

Add the command 'info' to retreive information about players and areas.
Add permissions: 'areaprotect.ap.info.area', 'areaprotect.ap.info.area.bypass.owner',
'areaprotect.ap.info.player' and 'areaprotect.ap.info.player.other'.
Add dialect for command 'info'.