added simple php scripts for checking sessions and listing courses
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
early rough cut of the new upload script
updated python script for creating zipfiles to handle multiuploads, and updated the schema to include session_tag
changed checksessions to work with section_id instead of course_id
small UI changes
cleaned up zipsessions and changed listcourses to return section_id instead of course_id
fixed bug with processupload.php