Unexpected result on Submitting form without verifying captcha.

When submitting the form without verifying captcha. One shouldn't be able to submit the form.
But this doesn't happen, instead we get redirected to
`https://cbemail.herokuapp.com/?error=1#form`
and response is
`{"message":"There is no God"}`

**Expected Behaviour:**
One shouldn't be able to submit the form until the captcha is verified.

**Current Behaviour:**
Form getting submitted,
Getting redirected to `https://cbemail.herokuapp.com/?error=1#form`
with response `{"message":"There is no God"}`

Start by reproducing the form submission described in the issue without verifying the captcha, then trace the form and captcha validation flow. Done means an unverified captcha prevents submission and the reported redirect and error response no longer occur.

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