Learning path (start-page card)

Puts the learning-path nudge on the signed-in start page: while the viewer's learning path is not finished and the instance has at least one course installed, one card with what is missing and the button that resumes it. Embeds the LearningPathNudge area of Edu/Courses.

Reconnecting…
The connection to the server was interrupted. Trying to restore it…
Trying again…
The connection could not be restored. Reloading the page…
The server was updated. Reloading the page to pick up the latest version.