Hints on Action Steps

One of the benefits of rewriting actions is to provide useful step information. With just adding some extra information for every step, this information can be shown to user. So user can get a proper hint message.

So all actions ported to a step based action can take advantage of this. Also this is enable for now just for line action but will be extended for all useful actions.

Also some logic error were fixed and the hints updates regardless of how you complete the shape's parameters: either by command line or by clicks.

You can download this build from here.