devilry_theme...bootstrap.scss: Nested-reset and layout styles.

See #459.
devilry_theme..._devilry_bootstrap_extras: Commented out

stuff that the reset should fix. See #459.
devilry_theme: Build JS.

See #459.
devilry_examiner...AssignmentWorkspace: Started on the layout.
Merge branch 'devilry-examiner' of github.com:devilry/devilry-django into devilry-examiner