irc admin plugin updates

Added ability to specify multiple users for op, deop, voice, and devoice
commands
ircop fixes and changes

Fixed glitch where more than 3 mode requests wouldn't be properly
batched.

Changed buffer processing behavior to acquire op if there are 3 or more
connector operations.

Fixed problem with the bot deopping when it shouldn't have.
added note to TODO about fixing error reporting in ircop