Send the Project ID with each Request

[maxammann]

Is your feature request related to a problem? Please describe.
Each webapp has a Host. For example right now the Host for Github Issues is: https://github.com. We want to use this Host as the project ID in the Administration frontend.

Describe the solution you'd like
With each request the Host should be parsed into a protocol and the hostname. The hostname is then used as a project id which is sent in each graphql request (#508).

• The hostname should be used as the title in the top left corner of the navigation bar. For example: "Druckerei nuernberg.ehrenamtskarte.app".

Describe alternatives you've considered
None

Additional context
None

[maxammann]

Closing as this should have been closed with #572

@michael-markl please verify :)