o The metaelements and metasources now carry the name, the loader
    resolves source names now.

  o Element/Source factories dont require a name anymore as they
    are already in the meta objects

  o Pipeline no longer composes names

  o Element.name is now the original project relative filename,
    this allows plugins to identify that name in their dependencies,
    allowing one to express configuration which identifies elements
    by the same name that the user used in the dependencies.

  o Removed plugin._get_display_name() in favor of the plugin.name

  o Added Element.normal_name, for the cases where we need to have
    a normalized name for creating directories and log files

  o Updated frontend and test cases and all callers to use the
    new naming