The language files for the 5 STK's apps define many keys that are redundant.
Fallbacks exist for them in the framework bundle.
This will be confusing, and lead to translation errors and more work.
All of the action and column labels should be removed for English and German files.

A few more keys should be added to the framework as fallback keys as well to make this really nice:
actions.addNode=Add content node
actions.addProperty=Add property
actions.editProperty=Edit property