fixup! pqDoubleRangeSliderPropertyWidget: add a reset button

Change-Id: I70027cd9a682e05ed16cf52c358b58c38640ba44
Merge topic 'scalar-reset-button' into next

f674f1f3 fixup! pqDoubleRangeSliderPropertyWidget: add a reset button
pqDoubleRangeSliderPropertyWidget: add a reset button

Change-Id: I7176298a1357571ddf402e453d34a1108fdcc921
Merge topic 'scalar-reset-button' into next

a73aae04 pqDoubleRangeSliderPropertyWidget: add a reset button