Fixed typo.
Updated copy in register.html.

LMS-134
Added i18n to register.html

LMS-134
Merge pull request #1 from symbolist/usman/lms134-update-register-page

Updated register page
manually merge line for conflict
Merge pull request #2 from symbolist/zub/story/test2-mergesomedataforconflicts

manually merge line for conflict
Added tests for unparsable matlab grader response.

TNL-388
If matlab grader sent unparsable response, show error message
instead of trying to render the response.

TNL-388