Intelmq-fody-backend

* Checkticket:
* Adds optional `limit` parameter to endpoint `./getEventsForTicket`.
* Changes `getEventIDsForTicket` to returned a sorted list, to make
the query result consistent for the same parameter.

* Contactdb:
* Fixes search by email address so it filters out duplicates.
* Adds `tools/import_manual_contacts.py` to import manual contacts
from a .csv file via TLS.
* Adds sorting to some attribute lists when serving an org. Attributes
sorted are contacts, asns, networks, fqdns, national_certs and tags.

* Events: Changes /search endpoint to return complete events (similar to
checkticket's /getEvents)
* Events: Enhances subqueries:
* New subqueries can be added in the config file, see example configuration.
* The given parameter can be used multiple times in an SQL query,
for example: `("source.ip" = '%s' OR "destination.ip" = '%s')`

Upgrade
* Configuration: (optional) Add the example subquery `all_ips` to the
eventsdb config file to get one more useful query.

* Contactdb: Fixes annotation/search for organisation\_annotations.

* Contactdb: Adds search for annotations by tag-name.
* Contactdb: Allows to configure the list of common "tags".
* Contactdb: Changes email search to be case-insensitive.

Upgrade
* Configuration: (optional) Add "common\_tags" to the contactdb config file,
otherwise the default ones may be exposed to users by the frontend.

* Contactdb: Allows tracking of db changes by user.
* Contactdb: Adds example script for importing a manual whitelist.
* Technical: Module called "intelmq-fody-backend" now
* Technical: Compatible with psycopg2 coming with Ubuntu 16.04LTS now.

Upgrade
* To enable tracking of db changes by user follow instructions in README.md.
* Technical: Must make sure that calling code uses the new module name.