json fixes
json bugfix
New section for hw submissions
Specify when assignments are due
Adding week 4 materials
Merge branch 'gh-pages' of https://github.com/xmunoz/APCS into xmunoz-gh-pages

Conflicts:
	Resources/production/build.css
	Resources/production/build.css.map
Styling for newly-added `homework` section and table with another column
Added attr `target='_blank'` to all <a> tags so that links open in new tab