Code review comment for lp:~widelands-dev/widelands/autosave_on_objectives

I did slight modifications to the test and added a bunch of comments - I found the reason why the test did work for you and then didn't and did again: lunit did define some handles to cfunctions, so it needs to be pulled in after loading :).

I will merge this as soon as i get good internet again - seems impossible in this train right now.