number-sign(#) and percent-sign(%) in url results in "400 Bad Request"

[othmar52]

urlencoded number-sign (%23) followed by a percent-sign (%25) results in a "Bad request" http://<dev-domain>/filebrowser/testdirectory/%23%25 in case the directoryname is #%

Backslashes \ in directoryname results in a "404 Not found"