Better positioning of ban window

Signed-off-by: Alek Ratzloff <alekratz@gmail.com>

board/static/board/ban.js

@@ -34,5 +34,10 @@ function openBanWindow(banUrl) {
         fitWindowToContent(banWindow);
         banWindow.setResizable(false);
     });
+    banWindow.setPosition(
+        window.innerWidth,
+        window.innerHeight / 2,
+        "RIGHT_CENTER"
+    );
     banWindow.show();
 }