Added a "local conservation" test that examines conditioning.  Not a great test; wants significant revision.
Code cleanup in NavierStokesCavityFlowDriver--deleting commented-out code.
Various experiments, etc. in StokesBackwardFacingStepDriver.
Condition # reporting for cell 0, plus some messing around with h-weighted graph norms.
Added support for weighted graph norms.
Added method for computing the maximum condition number.  Should be treated with suspicion.
Added support for condition number estimates to SerialDenseSolveWrapper.
Added examination of error value to getMatrixConditionNumber.
Fixed the "HDGSingular" exact solution option to use the new MeshGeometry setup.
Added "cheap experimental" Stokes formulation.
Tweaked a gnuplot script output.