Jcr Tools subapps use commands directly.
This involves injecting bunch of components (CommandManager, uiContext, SimpleTranslator) and setting the params manually.
Most of the code is a duplicate of similar actions (ExportAction).
This means that every change in a command has to be reflected in the corresponding action and in this module.
We already have a mechanism to run actions/commands (ActionExecutor) which we should use.
The above applies for import and export sub app, the other two inject the command manager without actually using it.