ImportKeys: Changed UI a bit

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

@@ -2,16 +2,14 @@
 <menu xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto">
 
-    <item
-        android:id="@+id/menu_import_keys_file_paste"
-        android:icon="@drawable/ic_content_paste_white_24dp"
-        android:title="@string/menu_paste"
-        app:showAsAction="always" />
-
     <item
         android:id="@+id/menu_import_keys_file_open"
         android:icon="@drawable/ic_folder_white_24dp"
         android:title="@string/menu_open"
         app:showAsAction="always" />
 
+    <item
+        android:id="@+id/menu_import_keys_file_paste"
+        android:title="@string/menu_read_clipboard" />
+
 </menu>