devices with an empty wwn should be filtered out (not uploaded during device registration, skipped when attempting to upload metrics).
added a migration to delete existing device entries with an empty `wwn`
fixes#314
some code reformatting
adding tests for services and components.
cleanup of unused dependencies in components.
refactor dashboard service so that wrapper is removed before data is passed to component. (no more this.data.data...).
refactored components so that variable names are consistent (dashboardService vs smartService).
ensure argument and return types are specified everywhere.
adding tests for pipes.
adding ng test to ci steps.
change dir before running npm install.
trying to install nodejs in continer.
test frontend separately.
upload coverage for frontend and backend.
upload coverage for frontend and backend.
testing coverage file locations.
retry file upload.
Jason Kulatunga