added boiler plate controllers for adding sections
added "sections" model to db
added foreign key to sections table into auth_user
added output for list of sections into section_list
added simple view for sections list
added list of users in a section to section update list
removed word edit from section title
added basic form to add user email addresses
got form to search for emails from list and then add users that are matched
added clear_users method to sections table
added way to clear sections
added way to delete section
removed sections_add_users and sections_remove_users because im not going to use the
added sections_create method
added links to parts of sections
added interface and code to filter assignments by section
Files and Selection chapters revised for 106
Reverting Nick's changes
Add readingresp2, pset2, v1
partial edit of Jackie's week 3 assignment