Merge pull request #3013 from WilkAndy/feature_2835

Cody/other-devels, could you please see whether this fixes #2835 .  The ...
Merge commit 'd0f1adef93102587a06d6f65ee060bd640be0dbc'
add initial capability for specifying layer bounds refs #2941 #2567
Fixes #2861 .  This does not change any C++ code.  Documentation is updated, mostly concerning mass lumping.  Some more tests utilising mass lumping are added
Merge pull request #3025 from WilkAndy/feature_2861

Fixes #2861 .  This does not change any C++ code.  Documentation is upda...
Merge commit '0dfd6afc7bf8afeee329d2cebb7987560d61ae26'
Merge pull request #3023 from friedmud/layer_bounds

add initial capability for specifying layer bounds
Merge commit 'fc98b2a587b3c8f2f3094e48d22f443a172272fe'
Add and test MechanicalContactConstraint ref #2816

MechanicalContactConstraint is a general class for doing the full
set of contact formulations and friction models currently supported
by the DiracKernel-based mechanical contact system.

I've added a few 2D tests of this capability with this commit.  We're
working on a more comprehensive contact test suite.
Merge pull request #3020 from bwspenc/contact

Add and test MechanicalContactConstraint ref #2816
Merge commit '397c5c21605cd036c5e739d94cbd755ef70afa76'
Add ElementExtremeValue PP... also add a missing intermediate base-class so there is symmetry with nodal PPs closes #2776
Merge pull request #3027 from friedmud/element_extreme_2776

Add ElementExtremeValue PP...
Merge commit '788e22a00437ca9d43f8c0c8ea0821526655e309'
Added ability to automatically output material properties (#1189)
Adds error checking for peacock Outputs block loading. Addresses #3026

Remove trailing whitespace in fix for #3026

Updated code comment in fix for #3026

Adds error checking for peacock Outputs block loading. Addresses #3026
Merge pull request #3028 from bobkinl/fix_3026

Adds error checking for peacock Outputs block loading.
Merge commit '9533627ff2dbb16c4ae64965c78424318196c686'
Remove deprecated yourFileName parameter in Piecewise closes #2421
Remove deprecated AdaptiveDT TimeStepper ref #2423