Code cleanup & !help "Fix"

Willie
    - Alphabetised the command registration

WillieConfig
    - Remove unneeded @SuppressWarnings

Cake/Pong/QuoteCommandHandler
    - Put author status on single line

AbstractStupidException
    - Added missing line, was triggering my OCD

!help "Fix"
    - If command is admin only, and they aint admin, don't show it!