connect assessments engine (selects next exercise) to frontend via new API routes
change assessments API route as suggested in review K100348
Update year in README
Add (c)
Add matrix transpose test and update other tests to use 'equal' instead of 'equals' to work with qunit 2009+

Summary: Our qunit tests are um, out of date.

Test Plan: Tested locally

Reviewers: eater, alpert

Reviewed By: alpert

Differential Revision: http://phabricator.khanacademy.org/D895
growth mindset A/B test
Fix summatives better

Test Plan:
Did parallel_lines_1 in App Engine land on Chome dev and IE8.
Merge branch 'master' into assessment
Fix typo in similar triangles 1 hint

Closes #38809.

Auditors: eater
Fix local mode

Didn't see a review for this when it went in -- would appreciate code
reviews for all changes even if they're small.

Auditors: jascha
Fix scientific notation input box size on one type

Closes #38824.

Auditors: michaelchang, eater
Areas are multiples of 1/2, not always integers

Closes #38953.

Auditors: michaelchang
Disable autocapitalization on iOS devices. (Fixes: #39000)

Summary: Also, use <input type="number"...> on the radical answer-type.

Test Plan: Monitor bugs reported on khan-exercises.

Reviewers: eater, alpert

Reviewed By: alpert

CC: tom, stephanie

Differential Revision: http://phabricator.khanacademy.org/D1070
Fix radical input on touch devices.

Auditors: alpert, eater
moved setting of assementMode into prepareSite which is called after Exercises.init()

Summary: assessmentMode wasn't being set correctly because Exercise.init() had not been called yet

Test Plan: Load /labs/assessments/fractions page and get a problem wrong and make sure that it doesn't say try again

Reviewers: chris, jace

CC: alpert, eater

Differential Revision: http://phabricator.khanacademy.org/D1074
Brit's dice probability exercise originated by David Sissitka, improved by Kitt, Eater, and Alpert

Test Plan: Local

Reviewers: alpert

Reviewed By: alpert

Differential Revision: http://phabricator.khanacademy.org/D1075
Basic set notation exercise

Added a basic set notation exercise covering unions, intersections and
differences.
Changed from 2 space indents to 4

Whoops. Bad Sublimetext - no donut!
Missing div tag in the vars section

Missed it when reformatting the code. Isn't caching swell.
changed the api call to use user_assessment_key rather than the assessment slug