Add node /welcome - redirect user to this node after installation

k.wiktorowicz → made their first commit to this issue’s fork.

Testing steps:

1)
git clone https://git.drupalcode.org/issue/openintranet-3524319.git openintranet-3524319
cd openintranet-3524319
git checkout 3524319-Add-node-welcome-redirect-user-to-this-node-after-installation
./launch-intranet.sh

2)
Install in browser, do not install test content

I see "The referenced media source is missing and needs to be re-embedded." in section "Consult your intranet needs"

sebastian.langierowicz → made their first commit to this issue’s fork.