IceTouch now with Ice Breaking Boats!

Complete overhaul of the plugin:

This plugin hasn't had a purpose since CB1.3, but now it has a purpose again, instead of making ice mining a feature you can now allow or disallow ice mining for certain people.

Command Changes:

• /icetouch: show the description and version of the plugin (default: op)

Permission Changes:

• icetouch.mine: allows a player to mine ice and packed ice.
• icetouch: allows the people to use the /icetouch command (nothing special)
• icetouch.*: gives the player all the icetouch permissions (default: op)