Added configurable sever timeout so that default of 2 minutes can be overridden.  Set a timeout by adding a timeout property to the server and secureServer config objects in default.json.  When a timeout occurs, a debug log emitted and the socket is destroyed.  Connection events are also logged with a level of debug so we can see when a new connection is made to eCrud.
Added support for date comparison in queries.  Enclose ISO formatted dates in query strings with ISODate() to signal they are dates.  E. g.:

...?query={"date" : {"$gte" : "ISODate(2013-12-31T13:59:59)"}}

The time portion of the date string is optional.
Merge pull request #51 from dvazquez1027/VLER-DAS-4.4.1-timeout

Timeout and support dates in queries