added context menu with selection functions to region map
replaced CellIndex typedef with new CellCoordinates class
added missing edit lock for record reordering
added CellId role to RegionMap model
always use the cell ID instead of the exterior coordinate fields from the original cell struct
added create cell menu item to regionmap
added set/unset region actions to region map
added view action to region map
added 'view in table' action to region map
added f-type hint to TableSubView
Merge branch 'regionmap'