[itsme]

@Mike: Your support is fantastic, the extended UI for "Generate Song List Format" in V1.7.3 is great.

But I have to ask for a little refinement:
I created a song list format as shown in GenerateSonglistFormat.png by just clicking tags and tabs from the UI. But not only the tags and tabs are inserted, additional blanks show up. Songlist_Current.png shows the result that I get, Songlist_Expected.png shows what I would like to have. The blanks seem to be added when opening or closing the selection lists or when a tag is clicked. With other separators like ; I can remove the blanks easily by editing the song list format manually. When tabs are involved I cannot see what is a tab and what is a blank.

That would help:
- prevent that additional blanks are added
- visualize blanks and tabs in "Generate Song List Format" so that they can be edited e.g. like Notepad++ shows them (see screenshots)