++ Automatic offset for Dof::getType() of different FunctionSpace
          ## Need to be improved --> will add a lot of 'jumps' in DofManager

** Correction in SystemAbstract::assemble
     ++ Switching test function and field

** Lagrange Multipliers Formulations (Field tested by Lagrange and vice-versa)
     ++ Added a simulation to test that
          ## Same as FreeSpace but with constraint imposed by Lagrange

     ++ It works :-) !!

Free Space test cases + Nodal Interpolation + Small Fix in FunctionSpace: Bug with cell function in 2D for 3D Function Space + Vertices of GroupOfElement

DDM Tests: Rewritting SystemAbstract::getSolution + FunctionSpace::getUnorderedKeys() + FunctionSpace::getAllDofs with set + FunctionSpace::getKeys(set)

Small simplifications + Preparation for Formulation Independent FS + Preparation for multiple Formulations using same FS

Cleaner implementation of face permutation matching + Cleaner implementation of high order element in FunctionSpace

  ++ Now Dofs are numbered correctly
  ++ Tri, Quad and Tet Nodal Basis looks ok
  -- Need to compute Jacobians

Basis: Interface modification

Reworking ReferenceSpace -- Trying to have minimum reference space -- find permutation and reference space for 2d and tet

Working on Dof Reordering -- New GroupOfDof Interface -- Cleaning some tabs (replaced by spaces) -- BasisLagrange Implementation of Function and Grad

Removing concept of ElementData: not general enough -- Adding GroupOfJacobian: sexier -- Revert to by group assembly -- *BUT* weak() takes elementID: up to now use one sort at the beginning -- Need to fix that

Removing FunctionSpace={node,edge,} -- FunctionSpace{scalar,vector,} can be instanciated the way we want (well, one basis only up to now)

BasisLagrange::projection -- BasisGenerator: zaglmayr family becomes hierarchical family + Lagrange works again

Reorganisation of FunctionSpace -- Basis can be ONLY evaluated + Derivatives -- New Dof ordering: Iterate on Entity and then on Function Order

TetEdgeBasis: Problem with orientations -- RefBasis is wrong -- Node sorting is not the solution :-(

New Basis (with all RefSpaces): Done for Zgalmayr Tri and Line + new Interface -- New closure solution (all RefSpaces): Changing FunctionSpaces and Formulation

PreEvaluation of FunctionSpaceScalar Functions -- Works With Poisson -- 2X faster at order 10 -- Need Doc

Now Lagrange Basis (for Tri) completly in Basis Framework -- Still need a sexy way to choose between Zaglmayr and Lagrange -- Need to put LagrangeBasis::project elsewhere