browse filemounts recursively for editors in plugin-context

[brittakohorst]

Dear Fabian, our Backend-Editors expierence a different behaviour wether they use the media-module in a pagetree-context or from a plugin (filePicker).
In the pagetree-context they can browse all subfolders of their respective filemounts.
In the plugin-context they can only access the root-level of the actual filemount - so they cannot insert any FAL-Images in the plugin, since all ressources reside in subfolders.
It all happens in Fab\Media\Security\FilePermissionsAspect in function addFilePermissionsForFileStorages(...): the code-part that is executed when the current user is no Admin.
For our purposes it would suffice to ommit lines 68 to 82 - then the editors can search for ressources recursively.

Maybe you could introduce a flag in the basic extension configuration - allow-recursive-browsing-for-non-admins?

btw: issues #97 and #154 seem to hover around the same complex

As our editors can browse subfolders in the pagetree-context and can upload resources to subfolders I do not think that its a configuration problem...