Inquiry not saved when there are no recaptcha key and filter_spam set to false

[bricesanchez]

Step to reproduce:

• Set config.filter_spam = false
• Don't set any recaptcha key
• Send an Inquiry
• Check if the inquiry has been saved

If the bug is still present, the inquiry is not saved.

Hint:

refinerycms-inquiries/lib/refinery/inquiries/spam_filter.rb

Lines 14 to 24 in dba0730

	if recaptcha?
	if recaptcha_validated?
	@valid = true
	@inquiry.save
	else
	@inquiry.errors.add(:base, ::I18n.t(:captcha_invalid, scope: "refinery.inquiries.spam_filter"))
	end
	elsif simple_filter?
	@inquiry.save
	@valid = simple_filter_validated?
	end