Add state/province field available for addresses for event and profiles

Problem/Motivation

You can not add a state/province to address fields in events or profiles by default. In the US (and potentially other countries as well) this field is important.

Proposed resolution

"The field that needs to be added is administrative area. This corresponds to province, state, and region. My understanding is that address module is smart enough to add those fields conditionally the way it adds zipcode for United States and postal code for Australia."

Remaining tasks

- Export this default field configuration for events and profiles.
- Check if this does not create regressions for countries where this field is not needed.
- Create a pullrequest.