Simple gui automation

[AustinDeric]

DO NOT MERGE

This PR eliminates error windows if no plans or surfaces are selected with the simple gui. Instead the user is informed that pressing next will select all plans or surfaces.

[AustinDeric]

Ready to be merged. The code is tested and works well. The status menus should display more informative messages about the current state.

[jrgnicho]

Do the changes here alter the behavior of the Simple GUI or just adds a new automatic mode?

[AustinDeric]

They alter the behavior in only the following ways:

• Previously when a surface was not manually selected and "next" was selected, then the simple gui would return an error window and return the user to the select surfaces screen. The new functionality informs the user that all all the surfaces are selected when the user does not select a single surfaces.
• Previously the user would have to select a single plan to simulate and execute. Now the user doesn't have to select any plans and by pressing "next" the simple gui will simulate and execute all the plans.

In effect, this allows the user to press next and successfully perform all paths on all surfaces.

[jrgnicho]

@AustinDeric The way the the simple GUI works now forces the user to pay attention to what's happening at each stage in the process and so be more aware of any poorly segmented surfaces (if any) or and risky robot motions. I think that just allowing the user to mindlessly press the next button in order to get the robot to move could be unsafe.

[AustinDeric]

I agree, and mention above, that further information should be given for user awareness. In terms of unsafe path plans, we are still simulating all the motion prior to execution, so we are as safe as before.

At a high-level this new functionality is similar to that available in the admin gui because now the user can easily select all plans and surfaces.