I just updated the code in the
https://github.com/ralscha/archetypes/tree/extjs5/eds-starter-simple-app repository. The roweditor now works. The only thing that does not work is the chart. Not sure if there is a bug in my code or in extjs, because with the latest extjs nightly build (ext-5.0.1.1036) the app shows the chart.
To answer your question if there is a bug in my code and we are able to fix it I can create the archetype at the end of this month. If it is a extjs bug we have to wait until sencha releases 5.0.1