* get tests working and update copyright headers
* lint fix
* eslint ts update
* update CI to use NPM
* fix CI
* prettier
* npm, not yarn for docker
* remove unused package
* bump dockerfile to latest node LTS and no need for cache clean
* make frontend Dockerfile work and remove unused SUBSTRATE_TELEMETRY_SAMPLE
* remove final yarn references
* add another comment
* remove unused import
* remove more unused deps
* comment typo