Make the recaptcha minimum acceptable score configurable #219
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The recaptcha score is a value between 0 and 1.
Google recommends to analyze traffic and configure the acceptable score.
On a particular site in production, we notice a lot of spam with a score of 0.1 whereas legit submissions have a score of 0.9.
So I select a default value of 0.2, but I'm happy to set anything else that you'd feel more sensible.