webapp should be available over http so a proper redirect can be done to https
without this rule, one just gets a 'site is unavailable' result

Change-Id: I27b80a0044e9fe4e87e607412c8d0a089d4866a6
Merge branch 'feature/enable_webapp_http' of /home/git/repositories/micah/leap_platform into develop
Merge branch 'develop' of git.codecoop.org:micah/leap_platform into develop