Fixes kick/ban notification

Fixes issue with the players name being shown as worldspawn in the
kick/ban notification (garrysmod update broke it)

screenshot of issue fixed by this pull: http://cloud-4.steampowered.com/ugc/589161433379354678/29A808E6403E3C5DF01BBC792FD52753CB036C0D/

Also changed the ban command so that the reason doesn't need to be in " brackets, like the kick command.