Add Forest district boundaries and lands districts to Overlays

[LeannePyle]

Exact names from warehouse may need clarification, but looking to add to the list of Overlays:

• [x] Natural Resource boundaries https://catalogue.data.gov.bc.ca/dataset/natural-resource-nr-district

• [x] Lands regional boundaries - lands districts https://catalogue.data.gov.bc.ca/dataset/tantalis-land-management-regions

[LeannePyle]

@elisabethdeom - please check names listed

[LeannePyle]

Elisabeth says yes