Added start of DynamoDB-backed manager, and more db tests (mainly copied
from the old Boto tests). De-coupled a few commonly used functions and
variables to make them re-usable in multiple managers, as well as made
an abstract Manager class and Converter classes.
Merge branch 'develop' of github.com:boto/botoweb into develop
Merge branch 'develop' of github.com:boto/botoweb into develop