[Technical-Support] LPS-51581 "Please provide a valid xml schema definition" error when saving a web content structure after changing portal display language in Internet Explorer 8

Hey Nate,

I'm working on an ie specific issue where the A.each() does nothing when we try to iterate on a String variable as an Array. This works correctly with newer browsers but not on ie7 and ie8 (and ie6) because in these browsers the String is not an Array. If I use str.charAt(index) to reach a char of String then it will work everywhere.
Furthermore, I couldn't test this on master+ie8 because UI was broken but on ee-6.2.x my fix worked properly. Therefor I'm sending firstly to master.

Thanks Nate for your review,
 Zsaga