Do not offer "Reveal in editor" menu for elements w/o editor

Issue-Ref: 4202
Issue-Url: https://af3-developer.fortiss.org/issues/4202
Issue-Ref: 4162
Issue-Url: https://af3-developer.fortiss.org/issues/4162



Signed-off-by: Simon Barner <barner@fortiss.org>