fixing prop order on android theme
fixing prop order on ios theme
Re-enable clean-css's advanced optimizations.

The issue was fixed in v2.1.8.
fixing prop order in the lib scss
updating the docs order
Merge pull request #522 from twbs/clean-css-skip-advanced

Re-enable clean-css's advanced optimizations.
Merge pull request #534 from twbs/prop-order

Property order
Refactor properties.
Make everything work in all browsers (hopefully).
Fix one more error with Firefox.
WIP
Run `grunt`.