FLUID-5479: Working forward and inversion examples for valueMapper with compound values

 both as isolated transforms and model relay. Namespaced all values in ModelTransformationsTests.js and consolidated some duplicated options. Upgraded the model transformation system's ChangeApplier to be of the "new" variety anticipating removal of the "old" form before too long - this should make various wrappings of output values unnecessary, of the sort done by "wrapExpand" (now "wrapTransform") where the output value was required to be wrapped in a level of containment "value".