bug fixes

(ch3)fixed wrongway in office
(ch3)fixed door to lobby from office
(ch3)fixed May's speed in Plaza and walkway
(ch3)fixed May's size in Bar + market + PJ's room
(ch2+3)fixed Josh's scaling
(ch3)fixed door to walkway from plaza
(ch3)fixed Nina's dialogue
(ch3)added Shammy dialogue
Merge pull request #472 from jcotrel/master

bug fixes