added/updated new sprites, dialog system changes

pause button added
changes in dialog code for less memory leakage
changes in dialog animation
changed trashcan and water fountain collision handling
removed shadows from some things in preparation for standardized
shadowing
Game Options menu small clean up
background animals never match current animal
sorting layer script has option to follow it’s parent’s sprite in order
for text signs and future objects to work with play area layering
—TODO: reduce instatiations in story mode (most likely reason for huge
drops in framerate seen in text)