Widgets occluding others depending on the sequence of actions

[ayenpure]

Depending on the sequence of actions, certain widgets occlude others.
This can be easily worked around by closing the occluding widgets to access the desired ones, but is a minor inconvenience.

Two examples below:

1. Trying to change the colormap first, but then immediately trying to change the axis properties
   

2. Trying to change the bounds configuration and then immediately trying to change data arrays
   

[johnkit]

Seems like we should add some options to the "render" part of DatasetBuilder's config, for setting the scalar bar visibility, location (orientation, origin, length, thickness, maybe in parametric coords?)