Added app.py and caretta/pfam.py

bin/carettapp-demo

@@ -437,7 +437,7 @@ def write_output(clicked, clicked_all, chosen_feature, feature_dict, aln):
                     html.Button("Export all features", id="export-all")]
 
 
-@app.server.route('/static/<path:path>')
+@app.server.route('/caretta/static/<path:path>')
 def downlad_file(path):
     root_dir = os.getcwd()
     return flask.send_from_directory(