Add option to normalize penalty based on area Ref #3532.

Adds penalty and kinematic dirac contact tests for this feature.

The tests include contact release.
Hey Jason, I know it's a small thing... but we're trying to eliminate these unnecessary curly braces.  I know you guys have a slightly different code standard for BISON... but we're trying to make the code in MOOSE fairly uniform going forward.  Would you mind removing all of these extra curly braces from this commit?

Sorry to quibble over such a seemingly small thing :smile: