Use inner node name for inserted node's references

[eugene.litvinov]

We often use node references in our worlds, that links to node's files. In this node's files we give unique names for nodes, for example, "table". When we insert "table" node like reference in world, editor generate default name for it - NodeReference_1, NodeReference_2, NodeReference_3, etc. It would be more convenient, if editor give node name from node-file, and set it for reference node in world, like: table_1, table_2, table_3, etc. If node haven't name in it node-flie, then and only then editor set name for it NodeReference_1. Thanks