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
add acceptance tests for user profile pagination.

JIRA: FOR-492
Re-add mutiple choice advanced options
Merge pull request #3459 from edx/sylvia/docs/multiple_choice

Re-add mutiple choice advanced options
Make TinyMCE more tolerant about HTML elements

STUD-1565
fixes templating error (LMS-2560)
Remove verify_html as it isn't supported in TinyMCE 4
Add support for raw HTML editor.

STUD-1562
adjust codemirror window on raw HTML editor
UI String  Updates for Raw HTML Editor Change

Modified the Raw HTML template text and the help string for the Editor
setting.
Tests for raw editor and minor wording changes.
Experiment with cell widths to see if images will appear