added css enabled list builder template and its images, added relate and unrelate item ui, added search ui, also added template that will be used /templates
Renamed first_weekday_of_the_week_system to first_weekday_of_the_week_tz because Oracle does not approve of too long variable names, Moved calculation of weekday to SQL - impossible to calculate that in TCL
Added util_background_exec proc and friends for executing chunks of code in a background thread in a safe manner. There seem to be some thread issues, though :(
- Moving Malte's enhanced survey from the accidentally-created "oacs4" repository he created into openacs-4/contrib.- Malte's commit line was: "Added new survey module version for head."