BUG #0011858. Fix unnecessary showing of scalar bar.

Don't show scalar bar when user changes color array selection if the
representation is currently not being shown in the view.

Change-Id: Ie503f6bdd98947d76c01be7d87ea450d3dadc05b
Merge topic '15053_fix_coloring_with_missing_arrays' into next

b0094786 BUG #0011858. Fix unnecessary showing of scalar bar.