[breaking] add join.order() calls during marker and text node updates

- this reorders the object-constant nodes (i.e. for traces w/ ids)
  correctly 🎉
- BUT, this also brakes the update pattern for traces with non-numeric
  (x,y), as the .remove call in Drawing.translatePoint throws the
  join selections out-of-sync, leading an exception!

Author: etpinard

src/traces/scatter/plot.js

@@ -444,6 +444,8 @@ function plotOne(gd, idx, plotinfo, cdscatter, cdscatterAll, element, transition
             }
         });
 
+        join.order();
+
         if(hasTransition) {
             join.exit().transition()
                 .style('opacity', 0)
@@ -483,6 +485,8 @@ function plotOne(gd, idx, plotinfo, cdscatter, cdscatterAll, element, transition
                 });
             });
 
+        join.order();
+
         join.exit().remove();
     }