[Dev] I18n LocalizableString update

[Katie Capps Parlante]

Brian Kirsch wrote:
> The one disadvantage of this approach is 
> Chandler no longer be able to dynamically switch locales on the fly.

I think we can live with this. ;)

> 
> So here is the proposed change:
> 
> 1. No more LocalizableString type
> 2. No more Text alias
> 3. UString renamed to either Unicode or Text (See below for more details)
> 4. BString renamed to Bytes

+1

I mildly favor Text over Unicode, I suppose for the reasons Phillip 
mentioned, but either is better than UString.

> The proposed simplification will make developers lives easier and result 
> in a cleaner API overall for Chandler.

Thanks for pulling this together Brian.

Cheers,
Katie