Added database sql file
Fixed more upload problems

Also added a lightbox feature for image thumbnails, color highlighting
for the comparison page and refactored the directory structure
Added basic assignment functionality

Student assignment viewing not complete.
added simple php scripts for checking sessions and listing courses
More Assignment Stuff

Teacher reports for assignments and changed assignment creation.  Along
with some various other fixes.
added a .gitignore and the pictures folder (though the .gitignore tells us to ignore everything in that folder
removed all of the picture files
added just the pictures folder without any images
merging