Add a new command which is executable by all (non-ops too)

[walterhiggins]

The goal is to be able to add new console commands via javascript - however, only operators should have access to the js command so for an op to create a new javascript function and have that function executable by all, it needs to be exposed via another command.

That command will be jsp - (short for js plugin , or js proxy or js protected - take your pick). jsp won't in fact evaluate any javascript code - that would leave the server wide open for all players - instead it looks up a lookup table of javascript functions which have been exposed for use by players.
For example...

/jsp home set

will make the plugin lookup a table to see if there is a 'home' javascript function defined and if there is it calls that function passing in each argument. The distinction between js and jsp is this - js evaluates javascript. jsp looks up a table for a specific javascript function (the 1st parameter supplied to jsp) and invokes that function passing in all subsequent parameters.
The plan is to use the common (among bukkit plugins/servers) home plugin commands as a test-bed.

basic commands:
/jsp home - takes the player home.
/jsp home set - sets the player's current location as home.
/jsp home delete - delete the home reference
/jsp home help - prints help about the command

social commands:
/jsp home - go to 's home.
/jsp home list - display whose homes you can visit
/jsp home ilist - display who can visit your home
/jsp home invite - invite player to your home
/jsp home uninvite - uninvite
/jsp home public - make your home public (anyone can visit)
/jsp home private - make your home private

admin commands:
/jsp home listall - list all of the homes on the server.
/jsp home clear - clears player's home from server.

See http://dev.bukkit.org/server-mods/myhome/ for reference.

[walterhiggins]

Added functionality to core to support exposure of plugin 'commands' to non operators, and persistence of plugin-state.