Additional placeLayer/orderLayer tests. (#587)
Additional placeLayer/orderLayer tests. (#587)

This includes a more fully thought out version
of the tests for re-ordering layers. It features four
layers and tests placing one in the middle, end, and beginning
of the layer list.
bartvde/sdk,jjmulenex/sdk,jjmulenex/sdk,bartvde/sdk,boundlessgeo/sdk,boundlessgeo/sdk