tests: test-gendoc.t checks if anything was translated
This would triggered when the variable would be set wrong again.
tests: really test translations for rst syntax errors (
issue4003)
The variable LC_ALL did not work, use LANGUAGE instead. Before this patch, the
original language C was generated (and tested) in every run.
i18n: fix wrong rst syntax
Fix syntax errors like wrong indentation and invalid quotation.
All errors preventing to generate valid html documentation (by gendoc.py) are
fixed.