closes#8605
- This file has already been moved, might as well get the rename out of the way
- Especially as we don't migrate clients - everyone will now need to make just one change
refs #8221
Instead of serving our shared assets from a `shared/` folder, we move the file, which are used server side to `server/public`.
Adds a new `config.paths` entry: `publicFilePath` and renames the middleware to serve the files to reflect the changes.
Adds `404-ghost.png` images to be used by the server side rendered default template `error.hbs`.
