This will facilitate those tests needing a merchant
backend, since it is currently not possible to make
instances without having first a default instance defined.
This commit split in three main things:
* added deploy-webext to upload the extension zipfile
* put scope into the npm packages to be able to deploy them
* added deploy-npm to deploy related npm packages
Also, fixing bug on `make clean`. Some packages where not
being deleting tsconfig.tsbuildinfo and making subsequent
`make` fail
