Message changed for course import when timeout.
STUD-1283
Merge pull request #3232 from edx/waheed/stud1283-added-message-when-timeout-on-import

Warning message changed for course import when timeout.
Remove params from list.
Tweaking automatic screenshots in acceptance tests.
Merge pull request #3277 from edx/oleg/custom-params-fix

Do not allow user overwrite some LTI parameters using custom parameters field. BLD-989.
Merge pull request #3273 from edx/valera/hendrixx

Tweaking automatic screenshots in acceptance tests.
Introducing JSHint.
Revert back to original video JS files.

This should not be part of the PR.