minor changes hoping to reduce mistakes
minor changes hoping to reduce mistakes
Add scratchpad link and perma-permalink to dev mode
Merge pull request #24872 from beneater/css

Add scratchpad link and perma-permalink to dev mode
Don't require calculator for some degree->radian problems
Merge pull request #24878 from beneater/deg-rad

Don't require calculator for some degree->radian problems
Fix up debug links in timeline mode

- Make the permalink at the bottom work in timeline debug mode
- The random problem link should give a random problem type
Update the problem upon next problem

Make the counter advance to the next problem when you click 'next
problem', not when you check an answer and you get it right.

Checked by making issues before and after this change, and seeing that
the reported links are now correct
Allow graphing systems of inequalities with swapped colors

fix #10949

Tested systems_of_inequalities by answering both ways:

Correctly:
http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/graphing_systems_of_inequalities.html?debug&problem=0&seed=68&activity=%5B%5B%22correct-activity%22%2C%22%5B%5B%5B0%2C-5%5D%2C%5B1%2C-7%5D%2Cfalse%2Ctrue%2C%5B0%2C3%5D%2C%5B3%2C5%5D%2Cfalse%2Ctrue%5D%5D%22%2C39%5D%5D

Correctly (with swapped colors)
http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/graphing_systems_of_inequalities.html?debug&problem=0&seed=68&activity=%5B%5B%22correct-activity%22%2C%22%5B%5B%5B0%2C3%5D%2C%5B3%2C5%5D%2Cfalse%2Ctrue%2C%5B0%2C-5%5D%2C%5B1%2C-7%5D%2Cfalse%2Ctrue%5D%5D%22%2C41%5D%5D

Tested systems_of_inequalities_2 by answering both ways:

Correctly:
http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/graphing_systems_of_inequalities_2.html?debug&problem=0&seed=98&activity=%5B%5B%22correct-activity%22%2C%22%5B%5B%5B0%2C5%5D%2C%5B4%2C-2%5D%2Ctrue%2Cfalse%2C%5B0%2C-3%5D%2C%5B4%2C-2%5D%2Ctrue%2Ctrue%5D%2C%5B%5C%22%281%2C-4%29%281%2C%20-4%29%20is%20a%20solution%5C%22%2C%5C%22%5C%22%5D%5D%22%2C8%5D%5D

Correctly (with swapped colors)
http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/graphing_systems_of_inequalities_2.html?debug&problem=0&seed=98&activity=%5B%5B%22correct-activity%22%2C%22%5B%5B%5B0%2C-3%5D%2C%5B4%2C-2%5D%2Ctrue%2Ctrue%2C%5B0%2C5%5D%2C%5B4%2C-2%5D%2Ctrue%2Cfalse%5D%2C%5B%5C%22(1%2C%E2%88%924)(1%2C%20-4)%20is%20a%20solution%5C%22%2C%5C%22%5C%22%5D%5D%22%2C47%5D%5D

This fixes the case where correct answers with swapped colors are marked wrong.
Happy tau day!
Merge pull request #25020 from xymostech/tau

Happy tau day!
Revert to Raphael 1.5.2

Reverts the following commits:

807fb8b Use the newest version of raphael
c347773 Fix rotation in derivative intuition
1b63c14 Fix bar scaling in creating bar charts
de985b8 Fix bugs with mean/median/stddev
009aa9f Fix drawing lines with interactive
765c97b Fix divisibility intuition
7d24651 Make protractor work
c6ead2b Fix weird fixed-point bug in telling time 2
2f15f1f Refactor movable points to make more sense
b2a5173 Remove a stray quote
3c7c513 Re-draw the bar instead of scaling
83483d9 Actually fix it by double-buffering
72cbc21 Fix up styling and methods
Fix ordering of hints
Merge pull request #2 from xymostech/fix-congruency-hints

Fix congruency hints
Merge pull request #25122 from beneater/revert-raphael

Revert to Raphael 1.5.2
Merge pull request #24661 from Christi/numberline_3

Numberline 3 fix #18092 and other related (marked notabug)
Merge pull request #25012 from beneater/fix-10949

Allow graphing systems of inequalities with swapped colors