Birthday Notification Alert, Saving Bug Fixes

Added a birthday notification that pops up for admin users when
birthdays of users are either the current day, the next day, or 7 days
out. Also added a fix for missing saves in three student experience
columns. Finally, fixed the calculation for Total Students to exclude
students who had 0 service learning hours.

Note to Admin - some of the lines moved around (it's Devon's fault!) but we didn't delete anything and this build works great.