Merge branch 'feature_mesh_names' of https://github.com/paukstelis/Cura into paukstelis-feature_mesh_names

plugins/CuraEngineBackend/Cura.proto

@@ -29,6 +29,7 @@ message Object
     bytes normals = 3; //An array of 3 floats.
     bytes indices = 4; //An array of ints.
     repeated Setting settings = 5; // Setting override per object, overruling the global settings.
+    string name = 6; 
 }
 
 message Progress

plugins/CuraEngineBackend/StartSliceJob.py

@@ -270,7 +270,7 @@ class StartSliceJob(Job):
 
                     obj = group_message.addRepeatedMessage("objects")
                     obj.id = id(object)
-
+                    obj.name = object.getName()
                     indices = mesh_data.getIndices()
                     if indices is not None:
                         flat_verts = numpy.take(verts, indices.flatten(), axis=0)