fixed deprecated postgresql url for sqlalchemy (removes warning at

pboard/development.ini.base

 # pick the form for your database
 # %(here) may include a ':' character on Windows environments; this can
 # invalidate the URI when specifying a SQLite db via path name
-# sqlalchemy.url=postgres://username:password@hostname:port/databasename
+# sqlalchemy.url=postgresql://username:password@hostname:port/databasename
 # sqlalchemy.url=mysql://username:password@hostname:port/databasename
 
 
 # If you have sqlite, here's a simple default to get you started
 # in development
 
-#sqlalchemy.url = postgres://pboard:pboard@127.0.0.1:5432/pboarddb
-sqlalchemy.url = postgres://pod_protov1_dev:pod_protov1_dev_password@127.0.0.1:5432/pod_protov1_dev
+#sqlalchemy.url = postgresql://pboard:pboard@127.0.0.1:5432/pboarddb
+sqlalchemy.url = postgresql://pod_protov1_dev:pod_protov1_dev_password@127.0.0.1:5432/pod_protov1_dev
 #echo shouldn't be used together with the logging module.
 sqlalchemy.echo = false
 sqlalchemy.echo_pool = false