Show the link even if the course contains no assessable course elements.

Calculation of the learning path status of the course nodes.
First draft of a GUI to visualize the learning path of a course participant.

Rearrange the different settings in the same place with a segment view
for all resources. Implement a new flag for resources "bookable" which
indicates the entries with a booking methods. Guests users doesn't have
a right to view courses with booking methods.

status, all users, guests flags

to curriculum coaches and participants and assessment tool

breadcrumb without disabled the whole component which contains something
else