Investigate using Google Drive as aircraft configuration source

[daniele-athome]

The zip file is fine for most uses, however if users want to modify the configuration, the administrator needs to ask someone to update the zip file which is hosted somewhere. Investigate some options:

• use (a simplified version of) the aircraft build tool (giving it the old zip file as a start) and upload the zip file in Google Drive
• use a Google Drive folder to host the files

In all cases, a "bootstrap" file with the credentials would be needed (unless we want to use a real Google account, but the administrator must have a Google account then...)