Implement Google reCaptcha

[nfreear]

..

• — Client-size / Javascript reCAPTCHA implementation;
• — Server-side reCaptcha implementation;
• — multi-lingual support;

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• Gist: nfreear/8f74a... recaptcha-test.php
• https://developers.google.com/recaptcha/
• https://developers.google.com/recaptcha/docs/verify
• https://www.google.com/recaptcha/admin#list

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[iet:10288012] [IET team-desk]

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• First commit ~~ 0bf7832