Rebase to re-prepare PR
Add migration to remove pearson tables
Merge pull request #1791 from cpennington/rebased-lti-graded

BLD-384: Add grading to LTI module
[FIX] correccion de validacion de ciuidad cuando no existen datos cargados, pendiente cargar fixtures para cuidades y estados
[FIX] correcion en plantilla para mensaje de error
[FIX] autocomplete corregido con mensaje para resultados
[IMP] aplicada generacion de textos en español es _419
Merge pull request #1299 from edx/zoldak/remove-pearson-code

Remove code related to Pearson Testing Centers
Removed old migration
Merge conflicts
New migrations file
Merge pull request #1774 from edx/flowerhack/refund-requested-date

Added refund datetime info to Orders, OrderItems
Resolve conflicts merging master to rc/2013-11-21
Merge pull request #1802 from edx/ned/merge-master-to-rc-2013-11-21-again

Merged master to rc/2013-11-21, so we can merge it back to master.
[FIX] cambiado codigos de lenguaje
Enabled back turned off Video acceptance tests.

Updated comments.

BLD-537
Merge pull request #1797 from edx/valera/enable_acceptance_video

Enabled back turned off tests.
BLD-533: Improve calculator's tooltip accessibility.
Merge pull request #1798 from edx/anton/calculator-hint-a11y

Improve calculator's tooltip accessibility.
[IMP] mensaje de ayuda y texto en registro