Parse the start and end dates, and `wxh' on page load.
Parse the start and end dates, and `wxh' on page load.

Based on a couple patches from Will Moss.

Change-Id: I7f86eba47312bd0d2304617d8fe9d280047bad38

MadDogTechnology/opentsdb,OpenTSDB/opentsdb,alienth/opentsdb,MadDogTechnology/opentsdb,OpenTSDB/opentsdb,OpenTSDB/opentsdb,ShefronYudy/opentsdb,eswdd/opentsdb,andyflury/opentsdb,kidaa/opentsdb,MadDogTechnology/opentsdb,johann8384/opentsdb,alienth/opentsdb,andyflury/opentsdb,eswdd/opentsdb,sidhhu/opentsdb,johann8384/opentsdb,ShefronYudy/opentsdb,kidaa/opentsdb,sidhhu/opentsdb