Added new icons for changing fill colour, outline colour, and outline width.
Changing a shape's fill colour, outline colour, and outline width works now with the buttons.
Simplified the top navigation bar.
Merge branch 'master' of https://github.com/michaelteckcahting/csc309-a1

Conflicts:
	css/main.css
	index.html
	js/main.js
Adding comments for several functions. Moving documentation.txt to docs/documentation.txt.