Loading parcels with their points
Implementations:
- Added another check before removing any layers from the map
- Exported the function for loading parcels, we need to share the same layer group across the components
- Implemented the shared function for loading parcels when drawing new ones
TODO:
When editing a parcel, if a new one is loaded from the map, its points can cover the ones from the parcel we're currently editing. Needs to be thought over better.