As requested in #122 moved all the image files into a correct directory structure.
This does seem a bit logical indeed. And it makes it more clear where
which replaced image goes. It also makes the `cp` command less error prone.
Fixes#122
This PR updates the web-vault to v2022.11.1
It also replaces the main logo and top left icon to indicate it is
Vaultwarden.
And the footer text has been change to `Vaultwarden (unofficial Bitwarden® server)`
This hopefully helps causing less confusion.