fix placement of contacts header items

Signed-off-by: Marcel Hibbe <dev@mhibbe.de>

app/src/main/res/layout/activity_contacts.xml

@@ -194,15 +194,17 @@
 
     </LinearLayout>
 
-    <androidx.recyclerview.widget.RecyclerView
-        android:id="@+id/contacts_rv"
+    <RelativeLayout
         android:layout_width="match_parent"
         android:layout_height="0dp"
-        android:visibility="gone"
-        tools:visibility="visible"
         app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toBottomOf="@id/list_open_conversations" />
+        app:layout_constraintTop_toBottomOf="@id/list_open_conversations">
+        <androidx.recyclerview.widget.RecyclerView
+            android:id="@+id/contacts_rv"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:visibility="gone"
+            tools:visibility="visible" />
+    </RelativeLayout>
 
 </androidx.constraintlayout.widget.ConstraintLayout>