Per MGNLOBS-26 the repository property is only needed as a command parameter. However, the system expects to find it in two places: under the listener and as command parameter.

To reproduce:

1. Import the attached activateAddedPages listener.
2. Delete the repository property from /modules/observation/config/listenerConfigurations/activateAddedPages/listener/params/repository.
3. In the Pages app, add a new site root page.
4. Result: error 1.
5. Add the property back to command parameters but delete it from /modules/observation/config/listenerConfigurations/activateAddedPages/repository
6. In the Pages app, add a new site root page.
7. Result: no error is thrown but the page is not activated.

Error 1:

DEBUG a.module.observation.commands.CommandEventListener: Checking event for command info.magnolia.module.activation.commands.ActivationCommand invocation
DEBUG a.module.observation.commands.CommandEventListener: Command params are {}
DEBUG a.module.observation.commands.CommandEventListener: Path is /test8
DEBUG nolia.module.activation.commands.ActivationCommand: Will activate content from null repository with uuid null and path /test8
ERROR a.module.observation.commands.CommandEventListener: can't execute command 
java.lang.NullPointerException