Initial database creation in Postgres resolved 

* lck.django 0.8.10 fixes initial migration dependency resolution for profile-related models, profile sync properly rolls back on initial syncdb on Postgres
* documentation updated to indicate the correct workflow for creating the initial database structure with Postgres

  ```
  ralph syncdb --all
  ralph migrate --fake
  ```

  This is required because Postgres supports DDL transactions and we currently unfortunately have some bi-directional app1.models <---> app2.models dependencies.