[-] CORE: Fix isEmail() regexp, follow up 62798af

[websafe]

Fix "This e-mail address is invalid" on systems with older PCRE versions.
For details please check my comment on commit 62798af

[gRoussac]

Hi,

Thank you for your PR.

Can you just please edit title to [-] CORE: Fix isEmail() regexp, follow up 62798af ?

http://doc.prestashop.com/display/PS15/How+to+write+a+commit+message

Thank you Regards

[vTerenti]

(note: this is an automated message, but answering it will reach a real human )

Hi! Thank you for your pull request: your contribution to PrestaShop means a lot to us!

We are aware that this PR is still open after all this time, and we want to make sure that your hard work is not forgotten.

We are diving back into pull requests, and we want to work with you in order to get your PR to completion: we need your feedback!

Could you read this article from the Build devblog, and take the time to review your pull requests, so that we can work with up-to-date information? You don't have to do it all right now, and every little step helps.

Again, thank you very much for this contribution, and for your renewed feedback on it!

[vTerenti]

Hello!

This PR has been automatically closed because the branch 1.6 does not exist anymore.

Best regards