Django-map-location

- feat: display selected location or map center in text field below map
- feat: set-center button if no pin is set
- fix: truly hide pin (`pin.remove()` instead of `opacity=0`)
- remove `returnToPrevBounds` from locate default options

**Full Changelog**: https://github.com/relikd/django-map-location/compare/v0.9.1...v0.9.2

- feat: locate options
- fix: convert py options to json

Initial release