Motivation and emotion/Changes/2017

The following changes have been made for 2017:
 * 1) An early assessment exercise (Topic Development) has been added. This exercise is due by the start of Week 05 and is worth 5% of the final mark. The Book Chapter mark has been reduced from 50% to 45% to accommodate this change.
 * 2) Content in Modules 02 and 03 has been re-organised so that it follows the same order as the textbook chapters.