Log Message:
Update to 0.9.7. Changes:
- Use preludedb_delete_(alert|heartbeat)_from_list(). Require
  libpreludedb 0.9.9. Provide a deletion performance improvement
  of around 3000%.
- Handle multiple listed source/target properly. Separate
  source/target in the message listing.
- Make host command/Information link available from the Sensor
  listing.
- Always take care of the "external_link_new_window" configuration
  parameter.
- Make external command handling more generic. Allow to specify
  command line arguments.
- Allow to define unlimited number of external commands rather than
  only a defined subset (fix #134).
- Avoid toggling several popup at once in the HeartbeatListing.
- Only provide lookup capability for known network address type (fix #76).
- New address and node name lookup provided through prelude-ids.com service.
- Link to new prelude-ids.com port lookup instead of broken portsdb
  database (fix #162).
- Various bug fixes.