MAINT: disable jupyterdrag by default

src/core/js/ext_jupyterdrag.js

@@ -72,5 +72,7 @@ var ext_jupyterdrag = function($, logger, getEntityRole, getEntityID) {
 
 
 $(document).ready(function() {
-    caosdb_modules.register(ext_jupyterdrag);
+    if ("${BUILD_MODULE_EXT_JUPYTERDRAG}" == "ENABLED") {
+        caosdb_modules.register(ext_jupyterdrag);
+    }
 });