Static Analysis Boundary conditions buttons need to be updated

For static analysis, atleast the following boundary conditions should be present:

1. Fixed support - All DOFs restrained

2. Pinned support - Translation DOFs restrained

3. Elastic support - Defining stiffnesses for each DOF

4. Custom support - Toggle ON/OFF any DOF of the group

5. Symmetry support conditions - For symmetric and axisymmetric conditions

6. Displacement mode - To apply any fixed value of displacement to the group