Compatability update Minecraft version 1.7.2

Version Number Updated to v 1.0.11
Fixed a compatibility issue when running SafeCity along side the
Multiverse-Core v 2.5 plugin - added a soft dependency check for
Multiverse-Core, if found it hold initialising safecity untill
Multiverse-Core has finished loading, this resolves the issue.
Re-wrote the world PvP enable/disable, you can now either enable
globally, or disable and then using a new list enable per world
(Requires config update)
Updated the private zone spawn restriction command to allow for staff
override.
added alias command for "/z spawn" you can now use "/z tp".
Standardized all chat window output from SafeCity to follow the same
format.
Fixed a few minor buged with output messages, and added a few that were
missing.
Fixed a bug with the staff override permission outputting duel chat
window messages.
Updated to work with Minecraft 1.7.2
Added protection support for all of the new 1.7.2 trees.
Added protection support for all of the new 1.7.2 leaves.
Added protection support for all of the new 1.7.2 plants.
Added protection support for all of the new 1.7.2 blocks.
Added "Trader Permission" Allows players to trade with villagers (/z
trader <add|remove|list> <player>)
Fixed a bug where any user standing in the wilderness could kill animals
and villagers inside a protected zone.
Fixed a bug where the note block could be interacted with by zone
guests.
Fixed a bug where hay bails could not be placed or destroyed by those
with farmer permissions.