Cleanup/Execution

Cleanup: Execution

Output Type Fixation

Force Output Types to be determined before the Action runs? Would allow the Execution Filter to be a lot more lightweight, since those "zomg, the OT changed" situations cannot occur anymore (no need to init the View even if it's cached etc)

Container Attribute Mutability

What's set in the Action isn't allowed to change anymore. Period. That way, we can run all output type variants of a view at once during a cache miss, reducing load.