Add fallback fonts
Update dev .POT
Switch to classes instead of IDs
Convert all static functions (where we’re getting saturation etc from a static color) to that value, so we don’t spend time running those functions.
Fix padding on search button
Add the google fonts to TinyMCE using add_editor_style.

Our font families need to be URL-encoded so the commas
don’t conflict with how URLs are passed to TinyMCE.
Remove the reset and genericons CSS from editor style.