Re-refactor things

Changes:
- Move cloudbot/util/hook to cloudbot/
- Remove cloudbot/util/* aliases in cloudbot/
- Merge cloudbot/dialect/irc/protocol.py and cloudbot/dialect/irc/client.py into cloudbot/clients/irc.py
- Re-add cloudbot/client.py
- Fix a few refactoring errors in plugins/minecraft_ping.py
Generic plugin formatting
Fix for action
Remove two plugin test. Neither work, both depend on cloudbot.util.http which is no longer used.
Not at all a tracking system - TODO: improve