"Recommended field" indicators for "can't find" forms

- As a quick temporary solution between no checks on form fields and
  checks for mandatory fields, "recommended fields" have been
  introduced. No checks on field values but users are encouraged
  to fill in certain fields for better success rate.
- Removed "Physical location" from DTU employee form since it is
  based on mock-data until DTU addresses are available from
  Riyosha.