Dolphin forked KFilePlacesModel to add the timeline:/ and search:/ URLs and the grouping feature.

• The grouping should go in upstream KFilePlacesModel (so that the places model in the file picker doesn't look different)
• The custom URLs should be added by Dolphin on top of the default model (used as data source)

Also, killing this fork would also make PlacesItemEditDialog no longer necessary.