Finish hints
Change title
Ordering decimals exercise
Remove old exercise (again)
Ensure there aren't equal numbers with trailing zeros
Increase bias for more zeros and fix ordering
Avoid having a decimal = 0
Fix ordering
Improve how numbers are compared
Change hint to use words not fractions
Add plural for decimal place numbers
Fix plural for i18n
Utils for decimal place plurals
Merge branch 'order-dec' of https://github.com/petercollingridge/khan-exercises into petercollingridge-order-dec

Conflicts:
	exercises/adding_and_subtracting_rational_expressions_6.html