Boundary Conditions refactoring

[gervilquin]

Current status: In progress

Main classes/functions: BoundaryConditions, UnfittedFunction

Outline of the solution

• Define puntual and distributed forces in BoundaryConditions -> AnalyiticalFunction
• Create Tutorial for boundary conditions verification
• Define volumetric force in BoundaryConditions -> AnalyticalFunction
• Develop distributed Dirichlet conditions (Along with ProblemSolver refactor)

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• Replace in BoundaryConditions: (When MONOLITHIC, DISP -> MassMatrixBoundary)
• Create Dirac function
• Implement Dirac function case in MassMatrixBoundary
• ProblemSolver simplement nullspace strategy

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Assigned to:
Wingman: