Initialize the xmpp connection config in a background thread.
On android > 3.x network operations on the main thread crash the application.
This move the dns request made by the ConnectionConfiguration in another
thread by lazily initializing the XMPPConnection
<?xml version="1.0" encoding="utf-8"?>
<!--
Level list drawable for status icon
See src/com/beem/project/beem/utils/Status.java
for level values
-->
<level-list xmlns:android="http://schemas.android.com/apk/res/android">
<item android:maxLevel="100" android:drawable="@android:drawable/presence_offline" />
<item android:maxLevel="200" android:drawable="@drawable/status_requested" />
<item android:maxLevel="300" android:drawable="@android:drawable/presence_away" />
<item android:maxLevel="400" android:drawable="@android:drawable/presence_busy" />
<item android:maxLevel="600" android:drawable="@android:drawable/presence_online" />
</level-list>