Merge branch 'Musterprotokoll' of gitlab.kit.edu:kit/etp-lehre/p1-praktikum/students into Musterprotokoll

Updating students documentation, e.g. since yetserday SSH Key authentification is not required any more since students is now a public repository. Apart from that a few links have been corrected and an explanation how of the ILIAS-versioning has been added