Export ACLs results in incomplete CSV-file if description contains hash-character

[cs-hv]

problem

ACL list rules can be exported to a CSV-file. This file will be truncated however if the description contains the hash-character '#'. The hash-character and any following characters/lines will be truncated.

The steps to reproduce the bug

1. Add description to a network ACL Rule containing a '#'-character
2. Use function "Export ACLs" to obtain CSV-file
3. Store the file in an arbitrary download folder
4. Open the file in a text editor

What to do about it?

Fix required, the '#'-character must not be treated as delimiter/start of comment/whatever when contained in description.

[boring-cyborg]

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[DaanHoogland]

fixed #10259