Fix mimetype detection on public uploads for the workflow engine
Fix mimetype detection on public uploads for the workflow engine

Signed-off-by: Joas Schilling <ab43a7c9cb5b2380afc4ddf8b3e2583169b39a02@schilljs.com>

endsguy/server,endsguy/server,endsguy/server,endsguy/server,endsguy/server