Add Server Side Rendering SEO

[ademidun]

When the URL for a new page is entered into twitter's card validator or facebook URL debugger the meta tags should be updated dynamically to show a custom preview for that page.

See:
https://angularfirebase.com/lessons/seo-angular-part-1-rendertron-meta-tags/
https://github.com/AngularFirebase/E66-Angular-SEO-Rendertron