Remove a stray quote
Make congruency points not jump around
Merge pull request #24310 from saasmath/master

Restore colors to .simple-button classes
Fix some scratchpad bugs
fix #23568
Clear the scratchpad undo history when moving to the next problem
Merge branch 'master' into power-mode-rewards
Merge pull request #24351 from beneater/fix-scratchpad

Fix some scratchpad bugs
Merge pull request #24434 from beneater/fix-23568

fix #23568
Fix bug with checking answers in congruent angles
Adding support for controlling problem type and seed in the UserExercise object.

Test Plan: Tested locally.

Reviewers: david, eater

Differential Revision: http://phabricator.khanacademy.org/D271
Check if MathJax has loaded in tmplCleanup

fix #24542; fix #24541; fix #24540; fix #24539; fix #24518;
fix #24517; fix #24480; fix #24477; fix #24474; fix #24470;
fix #24462; fix #24439; fix #24430; fix #24420; fix #24404;
fix #24396; fix #24391; fix #24390; fix #24366; fix #24350;
fix #24348; fix #24346; fix #24341; fix #24331; fix #24325;
fix #24324; fix #24323; fix #24321; fix #24312; fix #24290;
fix #24289; fix #24245; fix #24226; fix #24206; fix #24201;
fix #24192; fix #24133; fix #24125; fix #24122; fix #24119;
fix #24091; fix #24042; fix #24038; fix #24032; fix #24031;
fix #24011; fix #24009; fix #24002; fix #23989; fix #23971;
fix #23951; fix #23949; fix #23944; fix #23937; fix #23930;
fix #23928; fix #23908; fix #23886; fix #23864; fix #23833;
fix #23832; fix #23827; fix #23819; fix #23814; fix #23800;
fix #23781; fix #23768; fix #23763; fix #23756; fix #23748;
fix #23317; fix #23316; fix #23315; fix #22803; fix #22733;
fix #22729; fix #22722; fix #14230; fix #14151; fix #13933;
fix #13323; fix #12485; fix #12185; fix #12071; fix #11761;
fix #11317; fix #11076; fix #11012; fix #10990; fix #10924;
fix #10918; fix #10855; fix #10677
Merge pull request #24458 from xymostech/congruency-fix

Fix bug with checking answers in congruent angles
Check for non-existence of MathJax properly
s/divisbile/divisible/

fix #24554
Fix from phabricator review D271.
Oops. Moved variable initialization to before userExercise is set.
I'm tired. :(
Fix some issues with parabola_intuition_3 introduced by refactoring of interactive.js

fix #13724; fix #24378; fix #24587; fix #24585; fix #24576;
fix #24549; fix #24512; fix #24485; fix #24467; fix #24452;
fix #24435; fix #24393
Ensure labels with no content are not MathJax'd

If a label has no content, still create it (in case it needs to be used
later) but ensure that no MathJax is run on it, which might cause a
[Math Processing Error] to be displayed