Request: Collapse and Grouping

[Jahfry]

May be an old request, I did do a quick look @ issues but might have missed it.

Once just a few mappings have been added it gets very hard to manage things.

Suggestions:

1. A "collapse" control on individual labels that would collapse the view to just the name of the label until expanded again
2. "Collapse All" and "Expand All" on the top menu
3. Groupings on the top menu. A. Would add top level labels for each group. B. Open that group to see any items assigned to it C. A "assign to group" button on individual top-level labels (only 1 group per label is fine) D. A "remove from group" button on individual grouped labels (would put it back in the top-level) E. Auto-assign Filters to a "Filter" group? But allow them to "remove from group" in case user wants them to be grouped with other labels.

Not trying to change the UX paradigm too much, the above would still work within the "1 plugin per line" UI methods you're using. At some point it might be nice to see Groups and collapsed items in an icon view but I know that would add that much more to the request.