Results linked to Classes

A database design update added a class id column to the tables for
question results and answer results. The relevant PHP files were updated
to track and store the class ID from which a student taking an exam is
accessing the course content.
Question Creation Interface

Textareas on the course and question pages were adjusted to be resizable
in response to window size, intended to facilitate content creation at
different window sizes.
Pre-registration Bug Fix, Student Interface Update

Issue where success message was not updating correctly when adding more
than one pre-registered student to a class was fixed.

The list of courses TA'ing on the student dashboard was updated to
include the title of the relevant class session.