rest of the SQL queries fleshed out

case 1 #2 uses TA ids which i didnt think we were using and aren't really necessary. Im ok with using them, just wanted to bring this up. Also, we need to add a course_crn field to workshopApplications because there is currently no way to learn a cowrkshop and its crn to what course it is for
more changes
altered database schema.
fleshing out the ta-lister for course
added courses.json
Merge branch 'master' of https://github.com/nmbook/csc296s14-dbsys-tams
fixed courses.json
added instructors.json
course import function
creating a php which looks up TAs for 173
tweaked course import function.
Merge branch 'master' of https://github.com/nmbook/csc296s14-dbsys-tams
Merge branch 'master' of https://github.com/nmbook/csc296s14-dbsys-tams
fixing small bug
incorrect db lookup bug fixed
hocus sql to test php functionality
added session import
made sessions 1 to many
Merge branch 'master' of https://github.com/nmbook/csc296s14-dbsys-tams
added import function to instructor