Merge branch 'release/0.6.0' into develop
chore(build): fix and improve build
refactor(variables): change variable names to dashed instead of camel case and prefix them

BREAKING CHANGE:
All sass variable names has changed. See variables.scss for new names.
feat(theCodeCampus styling): replace w11k colours with theCodeCampus colours
feat(corner-ribbon): add basic implementation of corner ribbon (top-right only)
fix(export): remove adding url to external links to avoid layout problems
refactor(variables): move all variables to one top level file
chore(project): bump version to 0.7.0
docs(changelog): update changelog for 0.7.0
Merge branch 'release/0.7.0'