Add application to auth token params

[robbevp]

This uses the new param from accentor/api#622

I went with the format WEB vX.Y.Z but am open to other suggestions.

Manual tests:

• Logging in creates an auth token with the appropriate application attribute
• Running yarn build creates a bundle that directly contains the version from package.json

[chvp]

I also just published new version of api and api-client-js. While this doesn't strictly need any of the changes in api-client-js it would be better to also bump it in this PR, IMO.

[chvp]

I would do this through the vue config (e.g. something like this: https://medium.com/hceverything/how-to-show-your-app-version-from-package-json-in-your-vue-application-11e882b97d8c). Reading the package.json in actual application code doesn't feel that nice.

Also, I would just write Accentor Web v${version}.