Added licenses page.

Whats Shaking NZ/res/layout/licenses_fragment.xml

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+              android:orientation="vertical"
+              android:layout_width="match_parent"
+              android:layout_height="match_parent">
+
+    <WebView
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:id="@+id/licensesFragmentWebView"
+        android:visibility="invisible" />
+
+    <ProgressBar
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_centerInParent="true"
+        android:indeterminate="true"
+        android:id="@+id/licensesFragmentIndeterminateProgress" />
+
+</RelativeLayout>

Whats Shaking NZ/res/menu/activity_about.xml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android" >
+
+    <item
+        android:id="@+id/menu_licenses"
+        android:icon="@drawable/ic_menu_help"
+        android:orderInCategory="100"
+        android:showAsAction="always"
+        android:title="@string/menu_licenses"/>
+
+</menu>