GitLab

Convert to use gitlab-ci-helpers

See merge request !2

Try to fix the worst security vulnerabilities

See merge request !1

Also, move to alpine to minimize footprint. This project still needs
serious work with the javascript deps and bower etc..

Updated dockerfile to work with jekyll and ruby2.2.5, and added circle-ci config file + kubectl config, using kasperrt/static_uninett as FROM for faster buildtime