add Right-to-Left support

so the languages that need RTL (right to left) that I currently know of are : 
- Hebrew 
- Arabic
- Persian/ Farsi
- Malayalam ? 

Not all of these languages are traslated but I think the easiest thing to do to get RTL working for them would be to add these to the list of selectable languages
A little nitpicky, but we'd probably rather

`object.try(:locale).try(:to_sym)`, so it doesn't crash the page if an object doesn't have a locale method.

Last thing we want is a whole page going down because of something tiny like this.