SLI files are opened as source, but the user can't do anything with it
Issue #1149
new
When opening the example data, the library_berlin.sli is opened as Other Files and the user can’t really do anything with it:
Is that intended, or shall we change that?
Would be nice, if I could directly open it as a SpectralView.
Or dropping it on an existing SpectralView.
Otherwise, better not openenig it as a source(?)