4.1-21: added functionality to allow @GET to get prev_data and update_data to use to notify users of what has been changed by email. Note: use .__all__ to get all fields updated.
BRANCH 4.1-21:
   added the background color for weekend in title area of gantt_element_wdg
   adjusted the background color of weekend divider bars
BRANCH 4.1-21:
  added search_expr option to SObjectCalendarWdg to specify the initial search as opposed to using search_type and filters
4.1-21: got rid of lines that were accidentally left in in the last commit
4.1-21: improve the way that dictionaries are displayed
ASTRAL: Customized gantt wdg for task schedule
BRANCH 4.1-21:
  added spt.table.get_panel() to get the view_panel of this table.. It returns null if none exists.
  adjusted the order code and show_retired code so that embedded table can show the retired items