Mnemotechnics for confused places

[xpelanek]

Manualy created for the most commonly confused places (100?). (Other potential options: crowdsourcing, automatic creation of hints from wikipedia, ...)

To display directly after the mistake was done and in "My mistakes" (see another issue).

[slaweet]

I've created a spreadsheet with places sorted by number of mistakes [0] to crowdsource the hints ourselves.
[0] https://docs.google.com/spreadsheets/d/1QdaFx-Z8lDIJzDeiOM0PbNtriyb5oA_ioMP39_btcC0