Added active and non_time_specific flags to reg_time table and added new date/time...

Added active and non_time_specific flags to reg_time table and added new date/time form to reg event dashboard.

Updated database version to 0.0.19 and added active and non_time_specific boolean fields.
Added Active checkbox to time edit dialog box and code to change entry background color in calendar in eventDashboard.html
Added storage of Active flag to updateAvailability.php.
Adding dialog box for adding a date/time entry.
Added new mask input jQuery add-on with more flexibility, added to time input fields for adding date/time entries.
Updated checkout page to use new mask input.
Started added AJAX processing for new date/time entry.