callouts should highlight themselves when clicked on.
added getSizeAt100Pct accessor to CaptionedImage

This is used for config fixup of the SVGContainer the captioned image will be appended to.
replaced SVGContainer's maxHt & maxWid config and properties w/ maxSize

The config values are still used if they exist and maxSize doesn't,  to give us time to update all the test pages.
use the brix created by the BricLayer, by adding temp code for what isn't yet implemented.

The BricLayer doesn't yet create mortar or append and draw the created brix. So there is temporary code to do that, so we can see that the brix have been created correctly.