Implement first few screens of Android 5.0-based UI.

Source/Android/app/src/main/res/drawable/oval_ripple.xml

@@ -0,0 +1,9 @@
+<!-- res/drawable/oval_ripple.xml -->
+<ripple xmlns:android="http://schemas.android.com/apk/res/android"
+        android:color="?android:colorControlHighlight">
+    <item>
+        <shape android:shape="oval">
+            <solid android:color="@color/dolphin_wii"/>
+        </shape>
+    </item>
+</ripple>