Makes it possibly to add properties from a file to the SDF-editor

As the headline says this commit makes it possibly to add properties from a file (e.g. a .csv) to a SD-file that are opened in the the SDF-editor. Either to all molecules of only some selected.
To be exact this only adds the possibility to use the wizard created for this purpose in the SDF-editor as well as on a selected file in the navigator. Instead of creating a new file the properties will be added to the SDF-editor, where the user can save it.