Added MElement::integrate, MElement::integrateCirc,
MElement::integrateFlux in similar fashion as in deprecated
Post/shapeFunctions.h

Integration of p-covector fields to riemann.

Lift And Drag better, but dgFunctionEvaluator returns some out of range values (bbox ?, precision ?)

better quad meshing

MElement : correct bug in 1d jacobian (please check this commit is correct, I'm surprise such a bug survived so long unnoticed)

integration points (order 8 meshes 10 times faster) + correct a bug in
dg for non iso-parametric in implicit

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(fracture in bending OK) 3) lua version of code 4) a test case with 3rd
order quadrilateral element. 
Some modifications are made in linearSystem (add a function to compute
norm of RightHandSide) and in dofManager (add a function to have the
fixed dof outside dofManager)

physical tags, partitioning, second order prisms

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fix multiple cut

meshPartitionOptions::partitionByExtrusion assigns all extruded elements to the same partition as the source element

* issue error for zero volume elements in FEA export
* reset element number between 2D/3D in FEA export

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free to improve...)

pretty please do not just "throw;" when you don't know what to do

+ constify MElement some more