same db used for dorks/events, friction-less db setup with connection strings

- Now operates with main loggers (sqla/mongo) for events and dorks and auxiliary logger for everything else.
- Uses standard connection string for db setup. (sqlite://, mongodb://, mysql://, etc)
- Rewrote a few tests and introduced some db specific tests
updates to "same db used for dorks/events, friction-less db setup with connection"
removed print statement
Merge pull request #38 from johnnykv/master

Same db used for dorks/events, friction-less db setup with conn string