Exam can be lead in opposite direction.

New checkbox at lesson selection list. Upon enabling this “invert”
feature, the term’s translation is provided and its foreign
language equivalent is revealed instead of the translation.
This enables testing both active and passive knowledge of the
terms.
Readme and tranlation update.

Explaining the new “invert“ feature.
Sample DbConfig class.
Switched the language to English.
Initial commit
GitHub merge