Change help button text, fixing LMS-319
text and style adjustments to help button modal
Tweak copy
Remove test_ike.py, Ike says we don't need it, and it looks like a test.
Merge pull request #24 from edx/ned/remove-test-ike

Remove test_ike.py, Ike says we don't need it, and it looks like a test.
Merge pull request #13 from edx/victor/help-button-text

Change help button text, fixing LMS-319