Introduce Letterboxing to users
We enabled letterboxing by default in TB9.0, and some users were confused about it.
https://blog.torproject.org/comment/284569#comment-284569 https://blog.torproject.org/comment/284575#comment-284575
This ticket aims to collect the efforts to explain to users what this feature does and why it is relevant.
To upload designs, you'll need to enable LFS and have admin enable hashed storage. More information