to match the lower camelcasing of the rest of the keys.

the style loader from the `\thesis@load` routine to a new
`\thesis@requireStyle` macro to make the semantics of
`\thesis@requireLocale` and `\thesis@requireStyle` more similar.

theses. Instead, the `\ifthesis@blocks@assignment` conditional can be
set either by the subsequently loaded style files or by the user. So
far, only the `fi` and `sci` style files set the conditional.

the `med` and `ped` style files.

the user guides.

`\thesis@blocks@frontMatter` in the `fss` style file.

This is a regression, but demangling just the logo paths makes little
sense and there is no practical way to handle this for all file
inclusions. If you need to load resources from non-ASCII paths, you are
advised to use a Unicode-first engine (XeTeX, LuaTeX).

\thesis@subdir is now robust against relative paths and UTF-8 mangling.

  (\end occurred inside a group at level 1)
  ### simple group (level 1) entered at line 99 ({)
  ### bottom level

always correct.