Add HCAPTCHA_SECRET, HCAPTCHA_SITEKEY param

app/config.py

@@ -292,3 +292,6 @@ ALERT_SPF = "spf"
 
 # Disable onboarding emails
 DISABLE_ONBOARDING = "DISABLE_ONBOARDING" in os.environ
+
+HCAPTCHA_SECRET = os.environ.get("HCAPTCHA_SECRET")
+HCAPTCHA_SITEKEY = os.environ.get("HCAPTCHA_SITEKEY")

example.env

@@ -145,4 +145,8 @@ DISABLE_ONBOARDING=true
 
 # By default use postfix port 25. This param is used to override the Postfix port,
 # useful when using another SMTP server when developing locally
-# POSTFIX_PORT=1025
+# POSTFIX_PORT=1025
+
+# set the 2 below variables to enable hCaptcha
+# HCAPTCHA_SECRET=very_long_string
+# HCAPTCHA_SITEKEY=00000000-0000-0000-0000-000000000000