decimal/pg_of_string, todo note
primary keys: 'id' type (bigserial), foreign keys: 'ref' type (bigint)
renamed test migration

--HG--
rename : proj/db/migrate/1.mlt => proj/db/migrate/1_just_tests.mlt
simple example to test and develop dresina: adding table 'products' and sample data
server replies on /product with data fetched from database by controller and rendered by template (no models for now, simple sql)