Feat/firebase login

making a test, to see if it is possible to create web components that communicate with firebase.

One more (see #31 (closed) Firebase + web components) nice list with things to tick off:

Objectives:

• login
• register
• logout
• show user account data
• update user email
• verify user email
• update password
• forgot password
• delete account
• create job
• list user jobs
• list jobs for a tag (featured-jobs)
• show one job on a /job/?id=job-id url
• edit a job on its url
• publish the job, so it appears on the homepage and content page
• delete a job
• firebase-app, take config for production & config for staging instances
• fix item-card, for items non joblist <- refactor component
• list job-item tags

Good to have:

• ? should not delete a published job; unpublish first?
• auth-status, small widget to show the current user status if any (to put next to /account nav-item)
• auth-flow component, that reuses login/register/user/logout

Can be nayce:

• notification system; fixed visual cards to notify the user like a console log does.
• async buttons; if action is a promise, disable btn and render its loading state. -> Hard because we're event based
• show quick actions on a job in a list (publish, delete edit)
• component to not show "false state"; if fetching data, do not show "no data". tough
• list all tags available across all jobs. Cannot be done without db change (aka, adding /tags table )?
• position job on the map
• convert address to geopoint with osm