Added case status filtering in HSR and HSR-map Reports.

If the user selects "Show All", then no value is passed through, the url parameter is left blank.  Using this `selected` method, there is no way to select "Show All".

This still works on the BPR and CMR because they don't actually use this method:
https://github.com/lwyszomi/commcare-hq/blob/d4050494c6de479937d608505a25373d994db63f/custom/opm/reports.py#L639-L645