bugfix typo preventing good ref_points displaying

unconfigured panoramas are viewable again

Refacto of Tiles handling and simplified a bit file naming for tiles/params.
By the way, fixes #297

THIS COMMIT BREAKS FILE LAYOUT AND REQUIRES MIGRATION (SEE BELLOW).

To migrate data :

cd tiles
find . '*.jpg' -exec rename 's/[^\/]*_(([0-9]{3}_){2}([0-9]{3}))/$1/' {} \;...

do not display ref_points and panorama further than 25km from the current one (tunable in constant)

Use propper RefPoint::get_all() instead of requiring ref_points.local.php

moved the ref_points path to a constant.

Bugfix: no ref_points was available when there was only one in ref_points.local.php

some request input checking/sanitization

typo

propper typing of params

Moved error handling and autoloading outside of the utils::init() (__autoload was not working actuallly)

Moved some treatements to functions for better understanding.

make use of constants

has_params and get_all for site_point

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

moved forms to separate files to put panorama.php to diet and make it more readable

- 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 mineure

permet la visualisation d'axes horizontaux via OSM

Amélioration du style et apports de nouveaux points de référence.

amélioration cosmétiques et remise à jour de la liste des fichiers.

remise en forme du travail de Victor Pongnian suit à son stage
Il reste pas mal de cosmétique à revoir mais le système devrait déjà être utilisable dans l'état.

Version réaliée pour la sage de Victor Pongnian

Première version enregistrée