Add missing Javascript file.

 - Legacy-Id: 4095

Author: OleLaursen

static/js/doc-history.js

@@ -0,0 +1,5 @@
+jQuery(function () {
+    jQuery("table.history .snippet .showAll").click(function () {
+        jQuery(this).parents(".snippet").hide().siblings(".full").show();
+    });
+});