added Japanese to Android app. Had to change target=android-20 to 21.

src/ui/android/project.properties

@@ -11,4 +11,4 @@
 #proguard.config=${sdk.dir}/tools/proguard/proguard-android.txt:proguard-project.txt
 
 # Project target.
-target=android-20
+target=android-21

src/ui/android/src/org/grammaticalframework/ui/android/Translator.java

@@ -33,6 +33,7 @@ public class Translator {
         new Language("de-DE", "German",  "AppGer", R.xml.qwerty),
         new Language("hi-IN", "Hindi",   "AppHin", R.xml.devanagari_page1, R.xml.devanagari_page2),
         new Language("it-IT", "Italian", "AppIta", R.xml.qwerty),
+        new Language("ja-JP", "Japanese","AppJpn", R.xml.qwerty),
         new Language("es-ES", "Spanish", "AppSpa", R.xml.qwerty),
         new Language("sv-SE", "Swedish", "AppSwe", R.xml.nordic),
     };