Fixing bug in quad1planestrain element
Adding Hordijk softening law and reduced integration
Allowing one-point integration
Unifying the evaluation of crack band width (is now independent of the number of Gauss points)
Correcting test of composite damage material
Fixed translation of numerical keyword values to strings (like stresses, strains).
Update of sm lattice model and test of randomfield
Fixed problem with dof where number was used instead of dofid.
Solved by removing the "number" variable from the Dof class and always referring to the dof id for storing and restoring.
Added mission changes to domain.C from previous commit.
Made intarray::printyourself(string) more useful for parallel applications.
Fixed load balancing code and tests.
Small optimization for rowcol class.
Significantly speeds up benchmark tests in debug build.
Simplified/optimized code by using more advanced FloatArray functions.
correction of previous commit
XFEM: Removed some redundant functions and parameters.
Merge branch 'master' of https://github.com/Micket/oofem

Conflicts:
	src/oofemlib/xfem/enrichmentitem.h
Fixed merge problem.
Fixed vtk visualization of XFEM elements.
PrescribedGradientBCWeak: More Gnuplot export.
Added README for documentation (doc/README), removed dependency on external robot tool, common include files moved to doc/include