BUG: Fixs the fully implicit nonlinear Newton solver

1. Fixs the fully implicit nonlinear Newton solver
2. Completes implementation of Newton solver that can be either semi implicit (SI) or fully implicit (FI)
3. Adds options to set the solver to either SI or FI
4. Default is SI
5. Now the lamda function computing the internal forces needs to know if it is SI or FI
6. Prints warning if the FI Newton solver does not converge within max iterations set

Written-by: Sreekanth Arikatla <sreekanth.arikatla@kitware.com>