Catching URLError, closing issue #32
Removed some dead weight
Minor clean-up
HTTP parsing test adapted to new parser
Request parsing more transparent for better error handling.
This is the first step for #35 more handling to be implemented.
ParsingError introduced. Glastopf catches it and takes the custom HTTP
response code.
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