Do not translate Latin-1 setting

The string used for comparison against actual encoding values was being
translated into different languages which made it not match any
available possible values.

This change corrects that and also adds in the case to use "SHIFT_JIS"
that the Japanese translators had put in when it was translatable.

Change-Id: I276bf4c8b2a150e9c2926633ed972bf3f3423831
diff --git a/res/values/strings.xml b/res/values/strings.xml
index 6844cbc..18a2144 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -483,7 +483,7 @@
         <item>SHIFT_JIS</item>
         <item>EUC-JP</item>
     </string-array>
-    <string name="pref_default_text_encoding_default">Latin-1</string>
+    <string name="pref_default_text_encoding_default" translatable="false">Latin-1</string>
     <!-- Title for a dialog displayed when the browser has a data connectivity
             problem -->
     <string name="browserFrameNetworkErrorLabel">Data connectivity problem</string>