Add Help & feedback screens to Android Chromoting client

remoting/android/java/AndroidManifest.xml.jinja2

 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
         package="{{ APK_PACKAGE_NAME }}">
     <uses-sdk android:minSdkVersion="14"
             android:targetSdkVersion="14"/>
     <uses-permission android:name="android.permission.GET_ACCOUNTS"/>
     <uses-permission android:name="android.permission.INTERNET"/>
     <uses-permission android:name="android.permission.MANAGE_ACCOUNTS"/>
     <uses-permission android:name="android.permission.USE_CREDENTIALS"/>
     <application android:label="@string/product_name"
             android:icon="@drawable/chromoting128">
         <activity android:name="org.chromium.chromoting.Chromoting"
                 android:configChanges="orientation|screenSize"
                 android:theme="@style/MainTheme">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN"/>
                 <category android:name="android.intent.category.LAUNCHER"/>
             </intent-filter>
         </activity>
         <activity android:name="org.chromium.chromoting.Desktop"
                 android:configChanges="orientation|screenSize"
                 android:windowSoftInputMode="adjustResize"/>
+        <activity android:name="org.chromium.chromoting.HelpActivity"
+                android:configChanges="orientation|screenSize"
+                android:uiOptions="splitActionBarWhenNarrow"/>
     </application>
 </manifest>