Apply additions to migrator to Field Publication

[tkleinke]

In Field Desktop there are some new migrations that have been added to the migrator that runs each time a resource is indexed to automatically migrate/fix fields in memory:

• The field "weight" now uses the input type "weight" (which means that it consists of an array of "weight" objects).
• The fields "beginningDate" and "endDate" are replaced with a single field "date" that uses a date range.
• Fields of the input type "date" need to be objects now consisting of the subfields "value" and "isRange".
• Rings of polygon & multipolygon geometries are now closed automatically.

These changes have to be implemented in Field Publication as well.