make RTL languages profile options even though incomplete

make RTL locales that are not complete selectable. This is so that they can post and have the app recognise they are typing in a RTL (right to left) script.

I wanted to make it clear these are not complete in the language dropdown menu, so added a section for them at the bottom 

looks like this : 

![image](https://cloud.githubusercontent.com/assets/2665886/4836988/b2d54b14-5fcd-11e4-86f9-32567ab4d0fc.png)
  
Why do selectable and detectable locales have helper methods, but RTL_LOCALES doesn't?