widgets: implemented ordering in ContactItem and CagouWidget: ordering of slides in collection_carousel were using a specific key during the sort, this has been replaced by an ordering implemented directly into the classes. Ordering has also been implemented in ContactItem to have items appearing in a consistent order notably for opened chats.

<intent-filter>
    <action android:name="android.intent.action.SEND" />
    <category android:name="android.intent.category.DEFAULT" />
    <data android:mimeType="*/*" />
</intent-filter>