Merge branch 'refactor' into 'master'

Refactor

This should be the final commit before actual work can begin. See the corresponding issues for more information on what this branch is about.

A few highlights include:

* A working vue.js project
* CI/CD has been set up
* All now dead code in the packend has been cleaned up
* The structure of the repository has been renewed


Closes #47, #41, and #40.

See merge request !15