* fix: action mt so we can again concat actions from two different tables
- without actually changing the public interface
- without having a local table that keeps track of all actions
* this should clear actions now
we never actually called this function which is kinda a problem because
we never cleaned up previous mapping stores.
We can also make a better mappings store which has access to the keys
sequences which would help the showing actions part
* bugfix
* that should now clear everything
only tests left i think
* more tests
* cleanup
* hack: make sure all actions get cleared
6daf35c88c