fixing incorrect single quote escaping in JSON

Fix for a part of issue #87. What happened there is that ``Browser`` returns incorrectly escaped JSON.
It escapes single quotes everywhere with a backslash, which is considered an error according to JSON specification (see first answer here for clarification http://stackoverflow.com/questions/2275359/jquery-single-quote-in-json-response).

This error leads to a large number of location queries to return errors, virtually every location that has a station name with a single quote nearby.