Update scripts/setup.sh

add libfreetype6-dev to dependencies (matplotlib)
add libpng-dev to deps
Merge pull request #505 from demaagdk/develop

regions allow region size to be equal to image size (not just strictly l...
make db connection come from mongoengine
add sleep while waiting for asynch polling
Merge pull request #506 from demaagdk/develop

add reset url
fix to states.py for multi-camera inspections
Inspections pass frame metadata to plugin