Improvement of "Add model resource" #6
Description
Currently the wizard supports adding picture files with the buttons "Pick vendor logo", "Pick Device Icon", "Pick Device Picture". The usability could be improved by showing the filenames after selection.
A further improvement would be to generalize the functionality by having just a single button "Add model resource" and a subsequent selection of any of the defined submodel types, not only the three picture files. The selected files should then be displayed for overview in a table.