Update payload interface for action functions
Update payload interface for action functions

- update type definitions for payload arguments to use
the interfaces defined in `actionTypes.contents` to follow
DRY principles
- remove unused imports

nteract/composition,nteract/nteract,nteract/nteract,nteract/nteract,nteract/composition,nteract/nteract,nteract/nteract,nteract/composition