Several language-specific options can only be set in the
tools-options dialogue, and they are applied to all
projects (particularly the replacement of quotation marks
and the spell checker language).
However, the language used may be different for each
project. Therefore, it would be nice if these settings could
be defined per project (or at least, as the language is
already part of the project settings, if there were profiles
for each language, automatically setting spellchecker
and quotation mark replacement options).