adds and delete ref_points from js interface

linked the map points to panorama visualization

FIXUP

now displays the circles with the same color as on the pano (sortof...)

Can now Load the pano.js in the view_cap.php

Added a display of all the ref_points on the map.

whitespaces + moved the loading to the HTML file

Fixed ref_points dialog (I broke it...)

- Moved ref_points.php to something less toulouse-specific ;-)
by default : no ref points, but the ability to define its own list
or to use one of the files from ref_points folder.
- Fixed the UI if the ref_points list is empty.

Amélioration du style de la page de tracé de cap
insertion de la distance du curseur au point de référence cur cette même page.