adding test to try to capture problem with dot product (passes, haven't caught problem yet)
adding Riesz rep option to get elementwise norms
adding anisotropic stuff to Mesh (as well as a testing utility numEdgeToCellIDEntries(), whcih maybe we should erase once we figure out unrefinement bugs
removing cruft (old energy error routines in linearTerm)
adding changes to confusion_jesse dir