Added Piaras

Added Piaras and updated scripts_npcs.txt
Fixed Piaras Script Desc.

Fixed the script to correctly read that Piaras is indeed the Inn Keeper
and not Lassar
Fixed Piaras: Keyword.Give

Piaras now correctly gives the right keyword for his personal info.
Fixed Piaras rumors
Revert "Fixed Piaras rumors"

This reverts commit 8a742391539a88bae9954833b0009a8815e7e224.
Fixed Piaras rumors

Piaras would talk about field bosses (which are currently
unimplemented).
Merge pull request #44 from iAmazed/Piaras

Added Piaras