More Fixes V3

PresentCommands.java:
- removed un-needed player.SendMessage's if there were no arguments
after 2/3 of the commands.
- added an error if the command /present tpset (player name) is executed
with the '(player name)' in the Done list in the config.yml file. Will
add a "/present undo tpset (player name)" command soon for if a staff
member accidently does "/present done (player name) without having a tp
set and chest setup etc...