Teleplates

1.2 - New permissions system, better saving

-Reworked permissions system:
--Now each telepate is either:
---Public: Accessible by anybody.
---Protected:
----With password: to teleport, you must enter password,
----With list. Accessible by everybody that is included, if whitelist, or by anybody that is not included, if blacklist.
---Private: Accessible only by owner.
-Moved permissions system to WorldSavedData.
-Bug fixes:
--Fixed #2
-Code cleanup

Full changelog and pull request: #4.