keylist: show delete as icon in multi-select

Graphics/get-material-icons.sh

@@ -59,6 +59,7 @@ python copy OpenKeychain file white folder 24
 
 # multi select
 python copy OpenKeychain action white lock 24
+python copy OpenKeychain action white delete 24
 
 # yubikey dialog
-python copy OpenKeychain action black check_circle 48
+python copy OpenKeychain action black check_circle 48

OpenKeychain/src/main/res/menu/key_list_multi.xml

@@ -9,8 +9,7 @@
 
     <item
         android:id="@+id/menu_key_list_multi_delete"
-        android:showAsAction="never"
+        android:icon="@drawable/ic_delete_white_24dp"
-        android:title="@string/menu_delete_key"
+        android:title="@string/menu_delete_key" />
-        tools:ignore="AppCompatResource" />
 
 </menu>