corrected loading of jquery
strip whitespace from string before sending the query. now less sensitive to newlines at the end of the query that did not work before
fixed issue with scrollbars in login button in Chrome
Enabled REST-style interface: use URLs of the form /ext/exp_id to load the special query list 'queries-exp_id.json' instead of the default 'queries.json'
updated REST interface: if no experiment-specific query file exists, use the default one