Merge of OpenFAST#163 (BeamDyn: Updated integration scheme for nodal …

…load outputs) (OpenFAST#265)

* Updated BD linearizaon perturbation precision

* updated error handling in static solve

* BD: fixed assumption about first-node relative rotation

* BD bug fix: point load array size with multiple elements

* BD bug fix: removed extra GlbRot transform on output QP loads

output forces -- removed extra GlbRot transform on output QP forces / moments

* BD bug fix: Updated integration of nodal output loads

New integration implemented by @andrew-platt.

* Fixes for multi-element load outputs at nodes

* clean up a few comments and modify some code logic to align with the dev branch after merge from Envision

* Merge conflict cleanup

* Update the BeamDyn reg test baselines

* Add more outputs in BeamDyn 5MW reg test case