Bug 665523 - Add a comment explaining what this locale string is. r=mfinkle

mobile/locales/en-US/chrome/localepicker.properties

@@ -1,5 +1,8 @@
 title=Select a language
 continueIn=Continue in %S
+
+# LOCALIZATION NOTE (name): The localized name of this locale.
+# Do not just translate the word 'English'
 name=English
 choose=Choose a different language
 chooseLanguage=Choose a Language
@@ -7,4 +10,3 @@ cancel=Cancel
 continue=Continue
 installing=Installing %S
 installerror=Error installing language
-list.loading=Loading...