created a special folder for copyrighted stuff

LICENSE

@@ -1,7 +1,12 @@
-**IMPORTANT NOTICE:** in the future, other directories might have their own
+**IMPORTANT NOTICE:** other directories in this source tree can have their own
 LICENSE files covering their contents. In that case, the MIT license in this
 file would not apply to them.
 
+The directory "./static/extra" includes files with other people and companies'
+intellectual property. The COPYRIGHT file there tries to list these contents'
+copyright holders. The files in that directory are not subject to the MIT
+license.
+
 ---
 
 MIT License

pages/tokipona/game_patches.md

@@ -98,11 +98,11 @@ sitelen pona.
 
 # sitelen musi
 
-![lipu lawa](shogi_title.png)
+![lipu lawa](/extra/shogi_title.png)
 
-![lipu musi, ante #1](shogi_game1.png)
+![lipu musi, ante #1](/extra/shogi_game1.png)
 
-![lipu musi, ante #2](shogi_game2.png)
+![lipu musi, ante #2](/extra/shogi_game2.png)
 
 * nasin pi lipu ante: nasin IPS