BAI: Introducing Hoover algorithm for HepNames

External IDs (like inspire-ids or ORCIDs) are automatically connected to
person profiles only when a paper carrying that id is manually claimed
to the profile.

* Hoover will identify for each author - that it is possible - those
  identifiers and try to connect them to his profile.

* After hoover will try to move all the signatures with that identifier
  to that profile.

* Finally, hoover will connect the profile with the HepNames record
  belonging to that author.