Tweak to limit flickering when Chosen replaces the SELECT fields.

assets/css/src/board.css

@@ -3,6 +3,10 @@
     font-size: 0.95em;
 }
 
+#more-filters {
+    display: none; /* Hide this filter initially, to avoid re-layout */
+}
+
 /* public board */
 .public-board {
     margin-top: 5px;