Show more courses on the right side of timetable management

Currently, there is a default value that is not sufficient on large screens.

added part::frontend source::customer::kath type::bug labels

changed milestone to /AlekSIS%"[NLnet #1 (closed)] Fix existing bugs with new timetable"

assigned to @hansegucker

created branch 16-show-more-courses-on-the-right-side-of-timetable-management to address this issue

mentioned in merge request !34 (merged)

closed with commit 843b1820

mentioned in commit 843b1820