add more targets to the dice feature

Allow the integration of ESASky in a jupyter notebook

the publications sources do ont update on new fields of view

link ESASky with dropbox

allow to create PNG thumbnails for a target list

Cannot retrieve all the Herschel PACS 70 micron images from a region

Filtering the publications does not update the symbols on image

Would it be possible to have access to the Chandra spectra as well?

download of Chandra FITS files is not working

Visualize the postcards on top of the backgroun image