Equation builder styles Fixes #4704893 #4704896 #4704750
Equation builder styles Fixes #4704893 #4704896 #4704750

Conflicts:
	stylesheets/widgets/equation_builder.scss
	stylesheets/widgets/math_buttons.scss

thinkthroughmath/ttm-coffeescript-math,thinkthroughmath/ttm-coffeescript-math