fix preferences not showing content

AndroidManifest.xml

@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="org.fox.ttrss"
-    android:versionCode="104"
-    android:versionName="0.8.3" >
+    android:versionCode="105"
+    android:versionName="0.8.4" >
 
     <uses-sdk
         android:minSdkVersion="8"

src/org/fox/ttrss/PreferencesActivity.java

@@ -1,7 +1,14 @@
 package org.fox.ttrss;
 
+import android.os.Bundle;
 import android.preference.PreferenceActivity;
 
 public class PreferencesActivity extends PreferenceActivity {
+	@Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        
+        addPreferencesFromResource(R.xml.preferences);
+    }
 
 }