Include pickadate

Author: thet

src/patterns.js

@@ -49,7 +49,7 @@ import "./pat/tree/tree";
 import "./pat/upload/upload";
 
 // REMOVE obsolete patterns
-//import "./pat/pickadate/pickadate";
+import "./pat/pickadate/pickadate";
 import "./pat/tinymce/tinymce";
 //import "./pat/texteditor/texteditor";