[Geo] * Spherical coordinates * Creating a geo_coordinates view * Unit and quux testing for GeoGalaxy class

[API]

• Adding /coordinates, to get a list of all objects in Zed galaxy and their coordinates
• Removing /perso

[Debug]

• Adding an object viewer /dev/object_viewer.html, javascript dojox.gfx3d frontend to the /coordinates API

[Story]

• Fixing two bugs introduced during documentation/cleanup