Tests that allow easy exploration of user objects have been added.

Fixes #3394

These tests are entirely trivial from a test-suite point of view.
They pass if they run.  They fail if the input files cause a crash.

Also a little doco has been added to user.tex that explains the
functionality.
Enable --error-unused for moose_test
Fixup logic for libMesh configure checks in MOOSE input files
closes #3403
Added active element to Dirac
(refs #2370)
std::vector<bool> is not thread safe
(refs #2370)
Remove un-wanted parameter (refs #2370)
Fixing bugs on stateful boundary props
closes #3414
Fixing incorrectly named BC in test
Merge pull request #3415 from aeslaughter/dirac-thread

Address threading issue for Dirac Kernels
Merge pull request #3405 from permcody/test_harness_error

Enable --error-unused for moose_test
Fixes #3411 .  Corrected uo4.i

Put some error-checking stuff in RichardsMaterial so this won't happen again
and also some LIBMESH_DIM instead of "3".

Also slightly altered RichardsSeffPrimPrimeAux.C to avoid a comparison
between signed and unsigned, which was not the cause of this problem, btw.
Merge pull request #3417 from permcody/stateful_bnd_material

Stateful bnd material
Issue #3399
Merge pull request #3419 from WilkAndy/uo4_crash_3411

Fixes #3411 .  Corrected uo4.i, also slightly altered RichardsSeffPrimPr...
Merge pull request #3402 from WilkAndy/uo_eg_3394

Tests that allow easy exploration of user objects have been added.
Add "color" option back in the Outputs block
refs #3384
Merge pull request #3423 from permcody/color

Add "color" option back in the Outputs block
Merge pull request #3407 from snschune/feature_3399

Issue #3399
more contact tests for #3418
A test of fracture flow added.  Fixes #3421

This test is a benchmark against an analytic
solution for solute advection through a fracture
and transverse diffusion through the bulk.

Both a heavy and a "light" test have been added that
are identical except for the timestep used.

Comprehensive doco has been added.
Merge pull request #3428 from WilkAndy/fracture_flow_3421

A test of fracture flow added.  Fixes #3421