activate/ deactivate actions in flows

[jlocatell]

Could be useful for not to delete an action included into a flow branch.

Also for isolate possible failing actions for having the following actions in that branch to get running.

[sramcharitar]

Yes! Thank you for working on this feature!  You guys are doing a great job!

[TylerH1]

@StephenAny update on when this will be available?