Save and share state of map
User story
As a user, I want to be able to save the state of my map (including loaded GRO.Data files and their visualization style) and share the link to it.
Comments
This would require to either store all the information in the URL (e.g. for each loaded GRO.Data file, add the file ID as parameter to the URL), or, to avoid too long URLs when saving styling options (or possibly filtering options in the future), to allow export and import of a JSON configuration file that stores all required information. It might also be an option to do both, i.e. add loaded file information (and zoom level or map extent) to the URL, but store styling options in files which need to be shared separately.