Basic functionalities:

- get the js code to work with DRF (full-AJAX)

- hire a HTML5/CSS designer :-)


Background work:

- use Celery for computation-intensive tasks (generating tiles)
  => in progress.  We should display the progress of tiles generation
  in the panorama view.

- general js code cleanup (tile display, bearing/elevation computation)


New features:

- Add photos, URL, etc to ReferencePoint model (useful to collect
  information about the reference point: pictures of the building,
  webpage with description, etc)

- Mini-map on the side of the panorama view, many uses:
  - see the current direction of the panorama on the map
  - click on a point on the map to see this point in the panorama

- Provide permalink with a given position in an image (to be able to share
  links like "What do you think <this building> is?")
  → already done in the PHP/JS version, actually (to_cap, to_ele)

- Create new reference points directly in the panorama view (right click /
  new ref point / ask coordinates, name, etc)

- Allow to define a "default" orientation/elevation/zoom when visualising a
  panorama, so that it's not pointing at the sky or a tree by default...

- Allow to zoom more on tiles, even if this means having a very low quality