Obtain and use DOF map (#4182)
Add WrongJacobianDiffusion kernel (#4182)
Add tests (#4182)
Fix dbg assert (#4182)
Document WrongJacobianDiffusion kernel (#4182)
A few more doxygen comments for completeness (refs #4182)
Merge pull request #4237 from dschwen/nextgenjacob_4182

Use DOFMapOutput in Jacobian tester