[Filesystem] Not possible to move or copy images between different filesystems

[Elfangor93]

There is no possibility currently to move or copy images between different filesystems. Once uploaded the image stays in the filesystem where it was created.

The two possibilities to work around this issue:

1. Delete the image and reuplod it on another filesystem
2. Edit the image form corespondingly. This will create a filesystem error, but the DB was correctly changed. Then adjust the filesystem by hand.

How to solve this issue

Expand the Filesystem Service to handle two different filesystem adapters and use the correct one depending on the task to perform.