Added powertools
* /powertool <command|-c chat>	to create/edit
* /powertool 					to clear
* Supports colours with &
* Tags:
  {x},{y},{z}: x y and z coords of you or what you click
  {world}: world name
  {caller}: powertool users name
  {calleruuid}: powertool users uuid
  For click on entity:
  {eid}: entity id
  {uuid}: entities uuid
  For right click on block:
  {x}, {y}, {z}: The block adjacent to the block you clicked on the face you clicked
  For player:
  {player}: The clicked player