In Tor Browser context, should network.http.tailing.enabled be set to false?
Here's what network.http.tailing.enabled
does: https://www.janbambas.cz/firefox-57-delays-requests-tracking-domains/ It depends on Disconnect's tracking list.
In Tor Browser context I'm not sure whether this would be beneficial.
To upload designs, you'll need to enable LFS and have admin enable hashed storage. More information