Updated hexa structure
Updated FEM solver
Updated Hexa deformation
Added the mesh deformations of suface_rotation and surface_translating
Updated Hexa
Merge branch 'master' of https://github.com/su2code/SU2 into FEM_Hexa
Working version of the FEA with Hexa
Updated FEA, integration 2D and 3D
Almost finish, still add variable edge number
Updated the looping over markers moving for the translation case
For aeroelastic simulations moved moment computation to follow elastic axis
Merge branch 'master' into feature_Marker_Deform
Commented changes to the symmetry BC
Merged conflicts
Fixing the data structure for FEM
Added surface_translating to surface movement
Final update in the grid_movement using FEA
Updated mesh deformation code
Merge branch 'master' of https://github.com/su2code/SU2
Fixed memory error in the CAvgGradCorrected_TNE2 solver