adding next baseline ddl.  This is required since we don't use explicit column defs in our model (i.e. we use autoload=true)
added update srid code to 1st sql script to be loaded since it needs to be done prior to view defintions in other sql scripts
needed to move the Base import in order for the sqlalchemy tabledefs to pickup the engine
db user should be 'next' from now on
db name is now 'next' and sql is now loaded in fixed order
Updated install instructions