Improved Street Loading Screen

Displays street name, region name, loading image, and minor flavor text.
Slight delay on street change, further style changes tbd.
Minor fixes to Street Loading Screen

More dynamic text and img sizing, added styles closer to original game.
Initial street load timer delay

Street loading percent and messages separated, minor bug introduced
concerning preview image load time
fix street preview blinking
Merge branch 'dev'
did some work getting the loading screen timing to look nicer
merged in the street loading changes from Courtney