Allow enrolment action directly in the table right after searching for a profile

After playing a bit with the tool, I've realized that I'd be much more productive if I would have a list of companies right in the profiles page where the list of developers matching a search is displayed.

The feature request consists of allowing users to add an affiliation quickly through a drop down menu in that table. This wouldn't allow to play with the dates, but in most of the cases this just consists of adding an affiliation to a given identity or sets of identities.

Start at the profiles page and its table of developers matching a search, then trace how affiliations are currently added. Done means users can select a company from the table to add an affiliation for one or more identities, without needing to edit dates.

Written by the indexing model from the issue text.