Add models Province, City, District
Add step_province_id, step_city_id, step_district_id to CaseRecords for each step
Add Detention provice, city, district dropdown to case_record_form
Add Detention Geo lightbox (modal) to CaseRecord edit view
Add All steps Geo lightbox (modal) to CaseRecord edit view, official and unofficial (only unofficial working before)
Add commented (non-functional) attempt at cascading GEO options
Add more code for geo-box, but commented out