Fix image/data dependecies for minified version
  * "mizarBaseUrl" will store the path to mizar src to have access to external images
  * No more ajax call to retrieve background surveys(stored as a text for now)
  * Implement get/set fov
  * Add coordinate system API setting method
  * All data relative links(StarsProvider/Constellation provider) are temporally modified to demonstrator
  * Move examples to appropriate directory