Changed submodule URL to use https instead of ssh

- https is preferred over ssh for the live site (rather not use ssh for
  the root user)
Merge pull request #69 from RuddockHouse/submodule_hotfix

Changed submodule URL to use https instead of ssh
Merge branch 'master' of ssh://github.com/RuddockHouse/RuddockWebsite into ui-fix