fix some bugs. When you receive a new chat, a notification appears.
Need some improvements cause if the chat was created before, then close no
notification appears (nofif only on new created chat).
<menu xmlns:android="http://schemas.android.com/apk/res/android">
<item android:title="Creer ou Editer un compte" android:id="@+id/account_edit" android:icon="@drawable/xmpp"/>
<item android:title="L'equipe Beem" android:id="@+id/account_about"/>
</menu>