Update FunctionCall execute() call for ActionPluginBase

I believe some of this has made it into the repo already, but there are still some areas to sort out(marked as todos in this patch). We can use this thread here for records and to sort out remaining.

I pushed some fixes for the execute() call and reworked how the action service is getting loaded so that the parent wouldn't be affected.

Thanks Michael - looks good, getting merged into 1.1.x

Automatically closed - issue fixed for 2 weeks with no activity.