Update server.rb - getPatcoElevatorStatusJson()

Changed getPatcoElevatorStatusJson() to return the date PATCO updated its statuses instead of when the user requested the status from PATCO. The date/time is formatted the same way the Septa JSONs are but can be changed relatively easily.
I think there's a problem on this line... example of date_from_site is 
```
23:15:07 web.1  | "/24/2014 10:32:04 PM"
```
I think there's a problem on this line... example of date is 
```
23:15:07 web.1  | "/24/2014 10:32:04 PM"
```

Which leads to the following error when executing next line:-

ArgumentError at /patco/elevator/outages
invalid date
file: server.rb location: strptime