* Allow downloading resources automatically, on demand, or when loading note
* Make needToBeFetched calls to return the right number of resources
* All: Improved handling of resource downloading and decryption
* Desktop: Click on resource to download it (and, optionally, to decrypt it)
* Desktop: Better handling of resource state (not downloaded, downloading, encrypted) in front end
* Renamed setting to sync.resourceDownloadMode
* Download resources when changing setting
* tweaks
* removed duplicate cs
* Better report resource download progress
* Make sure resource cache is properly cleared when needed
* Also handle manual download for non-image resources
* More improvements to logic when downloading and decrypting resources
