Scram-Sha-1 mechanism : do not send authzid if it not absolutely necessary
Some servers (ejabberd) reject the challenge if the
scram attributes a (authzid) and n (authcid) are equals
or they just don't handle the authzid.
So we just don't send it if they are the same
This fix #484
<?xml version="1.0" encoding="utf-8"?>
<!--
Layer Level list drawable for Avatar and status icon
See src/com/beem/project/beem/utils/Status.java
for level values to change the status.
The status icon must be resized using method
LayerDrawable.setLayerInset();
The drawable with id @id/avatar must be replace by the real
avatar using the method LayerDrawable.setDrawableByLayerId()
-->
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item android:id="@+id/avatar">
<shape/>
</item>
<item android:drawable="@drawable/status_icon" />
</layer-list>