Improve hyphenation on part pages.

[elbotho]

Some part pages (just 1 or 2) have hyphenation that could be improved.

We discussed adding stricter rules for the part page headings. Possible fallbacks:

• Change long titles in the WikiBook
• Manually change hyphenation before print

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[Lodifice]

Did you find out anything that helps us solve this issue?

We can set the \hyphenpenalty to restrict or disable hyphenation. In our cases, however, the words in question are Häufungspunkte and Konvergenzkriterien, which are too long to fit into a line. So all we can do is to set the break in the word manually. This can be done using \hyphenation, but it must be done for every word individually.

[Lodifice]

(we wait until analysis1_final builds again to see if @kulla's renaming of headers already fixed the issue)

[kulla]

Done at https://github.com/kulla/mfnf-analysis1-lmu-print2018

[elbotho]

Done for LMU-Print, but still a problem with generated PDFs. As with #102 I think they should stay open here.