QueryUi: URL.decode() url/query string before use
QueryUi: URL.decode() url/query string before use

Some browsers (aka firefox) like to encode { and } as %7B and %7D.  This
causes problem when parsing the query string since its using { and } to
figure out the metric and tags.  Without this the UI thows an error like
the following:

Request failed: Bad Request: No such name for 'metrics': 'server.nic.usage.mbit%7Bhost=host1%7D'

Signed-off-by: Chris Larsen <83037b211e1d109d6858769a113e269c3139ffd3@yahoo-inc.com>

OpenTSDB/opentsdb,OpenTSDB/opentsdb,johann8384/opentsdb,OpenTSDB/opentsdb,MadDogTechnology/opentsdb,MadDogTechnology/opentsdb,alienth/opentsdb,alienth/opentsdb,MadDogTechnology/opentsdb,johann8384/opentsdb