use localized decimal
localize answer, fix #150677

localize answer to match localized multiple choice option
Added lots of debugging lines. Changed no real code, but seems to work!
Parallel line Q now looks for 1 parallel line with a simultaneous intersection with two compasses
Clean up debug code ready to create pull request
i18n, fix #161076

* don't calculate with localized decimals
* add space after comma in comma separated list
use circle for solution unit
Add questions about direction and magnitude

Reviewers: eater

Reviewed By: eater

Differential Revision: http://phabricator.khanacademy.org/D7210
Fix hint

Reviewers: eater

Reviewed By: eater

Differential Revision: http://phabricator.khanacademy.org/D7242
Fix equation in hint and tidy things up a bit

Reviewers: eater

Reviewed By: eater

Differential Revision: http://phabricator.khanacademy.org/D7243
Comparing fractions with same numerator exercise

Summary: Extra hint to explain symbols

Reviewers: eater

Reviewed By: eater

Differential Revision: http://phabricator.khanacademy.org/D7208
Add degrees to answer box

Reviewers: eater

Reviewed By: eater

Differential Revision: http://phabricator.khanacademy.org/D7283
Simplify hints and make question less computationally intensive

Reviewers: eater

Reviewed By: eater

Differential Revision: http://phabricator.khanacademy.org/D7282
Move styling into external css file

Reviewers: eater

Reviewed By: eater

CC: khirasaki

Differential Revision: http://phabricator.khanacademy.org/D7312
Give students feedback if they don't move the point on the graph

Reviewers: eater

CC: justinjaffray

Differential Revision: http://phabricator.khanacademy.org/D7201
Fix crash when localStorage is disabled

Summary:
This still seems to be breaking people, and I want to set it back to the old
behaviour for the time being

I'm not sure why this issue report is still seeing this in non-private mode,
but we might as well make KA usable for them:
https://code.google.com/p/khanacademy/issues/detail?id=29475

Test Plan:
substate and load addition-1 in safari private mode
make sure you can answer a problem correctly

Auditors: alpert
Remove graphie.style autoSubmitIssues

Test Plan: none

Auditors: eater
Allow a user to skip a question shortly after getting it wrong

Test Plan:
Answer an answer incorrectly in a mastery task
Click skip within 1000ms (without changing the answer-text!)
See that you can skip the question

Before, users were effectively stuck on this problem because the skipping caused canAttempt to false, but then the conditional in this changeset (before this diff) would prevent the skip from actually happening.

Reviewers: jack

Reviewed By: jack

Subscribers: alpert

Differential Revision: http://phabricator.khanacademy.org/D7419
Remove specification of methods to solve

Reviewers: eater

Reviewed By: eater

Differential Revision: http://phabricator.khanacademy.org/D7254
Add requirement that answers be integers

Summary: Fix weird whitespace

Reviewers: eater

Reviewed By: eater

Differential Revision: http://phabricator.khanacademy.org/D7351