Rescale to Custom Range should be sticky

This issue was created automatically from an original Mantis Issue. Further discussion may take place here.

The Rescale to Custom Range should be sticky within a session. In other words, as an analyst explores their data, and looks at different variables, min and max set with Rescale to Custom Range should persist.

A great example from the paraview e-mail list:

Local server, Linux, 5.0.1
Open disk_out_ref.exo. All vars on. Apply.
Color by V. Rescale to Custom Range, use min=10, max=16.
Color by Temp.
Color by V. Min and max have been reset. This should not have happened.

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