android: added (1) dg icon (2) green/yellow/red colours for translation confidence (3) App grammars as test case in Translator.java

src/ui/android/res/drawable/first_person_utterance_bg.xml

@@ -2,5 +2,5 @@
 <shape xmlns:android="http://schemas.android.com/apk/res/android"
     android:shape="rectangle">
     <corners android:radius="4dp" />
-    <solid android:color="#75CD75" />
+    <solid android:color="#CDCDED" />
 </shape>

src/ui/android/res/drawable/second_person_best_utterance_bg.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+    <corners android:radius="4dp" />
+    <solid android:color="#75CD75" />
+</shape>

src/ui/android/res/drawable/second_person_chunk_utterance_bg.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+    <corners android:radius="4dp" />
+    <solid android:color="#FFB2A5" />
+</shape>

src/ui/android/res/drawable/second_person_utterance_bg.xml

@@ -2,5 +2,5 @@
 <shape xmlns:android="http://schemas.android.com/apk/res/android"
     android:shape="rectangle">
     <corners android:radius="4dp" />
-    <solid android:color="#7575CD" />
+    <solid android:color="#FFFF99" />
 </shape>

src/ui/android/res/layout/second_person_best_utterance.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<TextView
+        xmlns:android="http://schemas.android.com/apk/res/android"
+        android:layout_height="wrap_content"
+        android:layout_width="wrap_content"
+        android:layout_marginBottom="16dp"
+        android:layout_marginLeft="32dp"
+        android:layout_gravity="right"
+        android:padding="8dp"
+        android:textSize="20sp"
+        android:background="@drawable/second_person_best_utterance_bg"
+        />

src/ui/android/res/layout/second_person_chunk_utterance.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<TextView
+        xmlns:android="http://schemas.android.com/apk/res/android"
+        android:layout_height="wrap_content"
+        android:layout_width="wrap_content"
+        android:layout_marginBottom="16dp"
+        android:layout_marginLeft="32dp"
+        android:layout_gravity="right"
+        android:padding="8dp"
+        android:textSize="20sp"
+        android:background="@drawable/second_person_chunk_utterance_bg"
+        />