Add md file extensions to LICENSE
Fix typo in YAML front matter of exercise
Merge branch 'master' into gh-pages

Conflicts:
Switch to Weecology favicon
Add links from schedules to assignments
Adding main Material page
Merge branch 'master' into gh-pages
Highlight menu item for current page
Enabling and adding redirects

Some of the navigation is changing from the old site. This handles
redirect the old pages using the Jekyll Redirect From plugin.
Adding computer setup page
Adding database resources page
Adding programming resources page
Adding page on style guides