grader fix for sumofgrades
regression of !==
putting back some code lost in merge
restoring some regressions
more regressions
removing letter grade from extra credit item on User report
removing all traces of laegrader
introduced the parameter controlling whether grade_items or grade_grades is updated
fixed bugs
initial work on Grader report
bug fix
Changes to calc_weights to accommodate the Grader report
start of natural weights work on the Grader report
push to fix something that caused all  cat totals to be errors
additional work getting Grader report to use Natural Weights
changes to calc_weights to reorganize
changes to calc_weights and accuratepoints for Grader to work
additional changes to calc_weights_recursive and accuratepoints
getting natural weights working with Grader report
fixes some notices from show_element_header in Setup screen caused by showing weight on the Grader report
fix line that throws notices in the User report now that we're showing weights on Grader report
fix line in Grader report that was violating strict standards