Make wikigrok show multiple occupation suggestions when available

If there are 5 possible suggestions of occupations show and allow saving
of them

In this change:
* Switch over to using api2
* Add support for getLabels
* Add support for recording multiple claims
* Add language parameter for configuration later on
* Show WikiGrokB even if an occupation has already been stored for the person (they
might have multiple occupations)

Change-Id: I2b813f0a3d35dce2883f80a4f3c768ebf9bd70ed