Merge pull request #2842 from bwspenc/fix_test

Relax tolerance on test to pass on all platforms
Remove SparsityBasedGluedContactConstraint ref #2816
Merge pull request #2845 from bwspenc/constraint_contact

Remove SparsityBasedGluedContactConstraint
Adding a target that we can use from the testing script
refs #2819
Merge pull request #2837 from permcody/modules_2819

Adding a target that we can use from the testing script
General cleanup of DiracKernel stuff.

* Remove unused DiracKernelData object.
* Remove unnecessary includes from DiracKernel.h.

Refs #2847.
Merge pull request #2850 from jwpeterson/dirac

General cleanup of DiracKernel stuff.
Added NodalVariableValue assert (closes #2849)