add mvp Hebrew RTL support (only for comments)

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
in some cases, `object.locale` returns nil (e.g. is dealing with a `current_user_or_visitor`)
this presents a challenge for calling `.to_sym` , which we need to do, because the `RTL_LOCALES` are all symbols