Messaging: Implement option for swipe right to delete.

Squashed commit of the following:

Author: Adnan Begovic <adnan@cyngn.com>
Date:   Thu Jan 14 17:20:43 2016 -0800
Messaging: Implement option for swipe to delete.

  No one wants to swipe to archive, that's stupid.

Change-Id: Ia8f0fc675582ef343311e60b755e284322f25102

Author: chengzhi.hou <chengzhi.hou@ck-telecom.com>
Date:   Wed Feb 24 20:01:17 2016 +0800
Messaging: Swipe right to delete conversation

Change "swipe delete" to "swipe right delete", so SwipeArchive and SwipeDelete
can exist at the same time.

Change-Id: Id66167c2e749f8ab0ee917e0138027c7404b8c90

Author: Michael Bestas <mikeioannina@cyanogenmod.org>
Date:   Tue Mar 1 02:27:16 2016 +0200
Improve swipe to delete strings

Change-Id: I180d09a6680084d9fd87c6dafd56db18ca5a580a

Author: Joey Rizzoli <joey@cyanogenmoditalia.it>
Date:   Mon Oct 17 16:32:25 2016 +0200
Messaging: show snackbar instead of toast when deleting conversation

more consistency with archive action

Change-Id: I06129850860a2a51c10ade65fb87c9f37a0c2bfa
Signed-off-by: Joey Rizzoli <joey@cyanogenmoditalia.it>

Change-Id: Ia8f0fc675582ef343311e60b755e284322f25102

res/layout/conversation_list_item_view.xml

@@ -37,7 +37,6 @@
             android:layout_height="wrap_content"
             android:gravity="center_vertical|left"
             android:visibility="gone"
-            android:src="@drawable/ic_archive_small_dark"
             android:importantForAccessibility="no"
             android:contentDescription="@null"/>
         <FrameLayout
@@ -50,7 +49,6 @@
             android:layout_height="wrap_content"
             android:layout_gravity="center_vertical|right"
             android:visibility="gone"
-            android:src="@drawable/ic_archive_small_dark"
             android:importantForAccessibility="no"
             android:contentDescription="@null"/>
     </LinearLayout>