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
add simplified answer to hints, fix #156999
Merge pull request #161329 from mauk81/patch-8

add simplified answer to hints, fix #156999

auditor: peter

test plan: test exercises
Avoid misleading answer

Reviewers: eater

CC: alpert

Differential Revision: http://phabricator.khanacademy.org/D7026
Correctly avoid misleading answer
Merge branch 'master' of https://github.com/Khan/khan-exercises
Change hints to avoid using trigonometry

Reviewers: eater

Reviewed By: eater

CC: justin, alpert

Differential Revision: http://phabricator.khanacademy.org/D6849
Solutions to quadratic equations with only real solutions

Reviewers: eater

Reviewed By: eater

CC: alpert

Differential Revision: http://phabricator.khanacademy.org/D6776
Allow fraction answers, show rounding and generally tidy up.

Reviewers: eater

Reviewed By: eater

CC: alpert

Differential Revision: http://phabricator.khanacademy.org/D7000
Create basic hyperbola exercise

Summary:
Add answer box

Move focus information outside of solution area

Add hints

Start ellipse exercise

Start interactive ellipse shape

Add ellipse exercise

Make interactive ellipse

Reviewers: justin, eater

Reviewed By: eater

CC: alpert

Differential Revision: http://phabricator.khanacademy.org/D6603
Increase question precision

Reviewers: eater

Reviewed By: eater

CC: alpert

Differential Revision: http://phabricator.khanacademy.org/D6999
Write questions and hints to use product, so be less ambiguous

Reviewers: eater

Reviewed By: eater

CC: alpert

Differential Revision: http://phabricator.khanacademy.org/D6998
Make second comparing numbers exercises in new branch

Reviewers: eater

CC: alpert

Differential Revision: http://phabricator.khanacademy.org/D7050
Fix knumber.round

Summary: oops!

Test Plan: none

Auditors: justinjaffray
Improve roundTo comment

Test Plan: none

Auditors: justinjaffray
graphing_systems_of_inequalities_2: Remove getVAR

Test Plan:
Clicked the button.

Auditors: eater