Remove cruft from user profile threads

This removes the vote button from threads on the user profile, which was
the only interaction available on the page other than the link to view
the thread in the main discussion view.
Add pagination to forum user profile page
Typo corrections
Merge pull request #3453 from edx/sylvia/docs/DOC-224

Typo corrections
DOC-115 adds topics to make data interpretation easier
Merge pull request #3287 from edx/ahodges/documentation/DOC115

Ahodges/documentation/doc115
Removed trailing periods in two scenario names
Merge pull request #3456 from edx/clytwynec/remove-trailing-periods-in-scenario-names

Remove trailing periods in scenario names
Merge pull request #3391 from edx/gprice/user-profile-pagination

Add pagination to forum user profile
Re-add mutiple choice advanced options