2012-03-02-geliefert.html: Fix layout, rename img

Rename image file with umlaut, fix broken HTML.
2012-02-29-lets-aetz-minimoody-moodlamp.html: Fix layout
2010-07-05-grundlage-fuer-die-weltherrschaftsplaene-gebaut.html: Fix broken image link

Remove Umlauts from image file name.
Change jumbotron claim: we've got more space now

* main room: 110m²
* second room: 55m²
* Olymp: 30m²,
* hackerbrausestorageroom: 5,5m²