Moving residual helper functions from base class into helper class
for incompressible Navier-Stokes.
Adding flow variables to Navier-Stokes stabilization helper.
Use flow variables in stabilization helper to compute residuals. Had
to adjust API slightly to pass rho, mu.
Adding temp variables to heat transfer stabilization helper.
Add method to be able to init temp varaibles.
Actually initialize temp variables.
Consistent header guard naming.
More consistent header guard naming.
Moved heat transfer strong residual to stabilization helper.
Merge pull request #74 from pbauman/refactor_stab_base

Refactor incompressible Navier-Stokes and heat transfer stabilization base classes