Remove 1-D stuff from modules, python, and Python unit tests.
Merge branch 'baagaard/remove-1d'

* baagaard/remove-1d:
  Remove 1-D stuff from modules, python, and Python unit tests.
Merge branch 'master' into knepley/upgrade-petsc-interface

* master:
  Remove 1-D stuff from modules, python, and Python unit tests.
Remove splitField() from modules (removed from C++).