Limit search by date. Timeout function

Users can limit searches by date. Calendars are opened in a seperate
window from the main page. Dates are not cleared at the end of each
search at the moment. This means that when you select dates they won't
be removed by the system. Standard start and end dates are 01.01.0001
for start and todays' date for end date.

Another added feature is a 30 seconds timeout on searches and 15 on
coonnection