Fixed several issues with mob spawning

* Baby zombies can now be properly spawned with the 'b' flag
* Skeletons once again have bows
* Pig Zombies once again have golden swords
Added the alias tpa to the call command
Fixed permissions checking problems in the Teleport Component
Ensure CommandBook prefers player's that aren't the sender

This fixes the issue where "foo" is trying to teleport to "foo_bar" by typing "f" and instead gets teleported to him/herself.