Improved dictionary options for German, French, and Russian

German:
* Current dictionary renamed to German (Extended) and includes äöü.
* New German dictionary replaces these with ae, oe, and ue.

French:
* Current dictionary renamed to French (Extended) and includes àâçéèêëîïôöûü.
* New French dictionary replaces these with a, c, e, i, o, and u.

Russian:
* Earlier dictionary reinstated as Russian (Extended) containing many more words.
* The current (smaller) dictionary remains.

Thanks to everyone who provided language specific input. This could not have been done without your help. A truly international effort.

Suggestions for your favourite language? Feedback welcome.

Support further development via Liberapay or GitHub Sponsors.
