Fix logic to generate test source.

There were not enough points in the output as expected by the cells generated.

Change-Id: Id08881207b08cbda6c65a8657ee504fbab2c9558
Making it easier to add contours.

With improvements for BUG #14198 which made it easier to add annotations by
adding a new class for showing expandable tables, updating the panel for the
Contour filter to use the same widget.

Updated to tests to exercise some of the functionality of the update panel.

Change-Id: I69b667b3b428d66310363ea24ce9badfc0f2cc2f
Merge topic '14198_easy_add_contour_values' into next

53bdeb4 Making it easier to add contours.
Merge topic 'fix_manta_benchmark' into next

8a59143 Fix logic to generate test source.
When deleting items, ensure the current is updated correctly.

Change-Id: I27734f4ebfaae2d9f3e9e23c4ca88ce8e1a044c1
Merge topic '14198_easy_add_contour_values' into next

a26ce86 When deleting items, ensure the current is updated correctly.