Updating ActionBar title. Save button is now Undo.

WordPressUtils/src/main/java/org/wordpress/android/util/StringUtils.java

@@ -11,6 +11,7 @@
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
+import java.util.Locale;
 
 public class StringUtils {
     public static String[] mergeStringArrays(String array1[], String array2[]) {
@@ -228,6 +229,28 @@ public static String replaceUnicodeSurrogateBlocksWithHTMLEntities(final String
         return out.toString();
     }
 
+    /**
+     * Used to convert a language code ([lc]_[rc] where lc is language code (en, fr, es, etc...)
+     * and rc is region code (zh-CN, zh-HK, zh-TW, etc...) to a displayable string with the languages
+     * name.
+     *
+     * The input string must be between 2 and 6 characters, inclusive. An empty string is returned
+     * if that is not the case.
+     *
+     * If the input string is recognized by {@link Locale} the result of this method is the given
+     *
+     * @return
+     *  non-null
+     */
+    public static String getLanguageString(String languagueCode, Locale displayLocale) {
+        if (languagueCode == null || languagueCode.length() < 2 || languagueCode.length() > 6) {
+            return "";
+        }
+
+        Locale languageLocale = new Locale(languagueCode.substring(0, 2));
+        return languageLocale.getDisplayLanguage(displayLocale) + languagueCode.substring(2);
+    }
+
     /**
      * This method ensures that the output String has only
      * valid XML unicode characters as specified by the