Fixed issue with Spoofax tour page
Fixed links on Spoofax page
Fixed link to IN4303 course assignments
Fixed links in /dev and Spoofax FAQ
Added link to GNU LGPL 2.1
Changed license links from https to http

On Firefox trying to connect to https on a site that doesn't support it
causes an error about not using a safe connection.
Changed 3 remaining license links to tl;dr Legal
Merge pull request #4 from Virtlink/master

Fixed Spoofax Tour page and links