When shorten the url, link should be opened in a new window

[Ervoconite]

The problem

When shorten the url，link should be opened in new window !

If not, and since I click the new generated url, I may never find it again !

The solution

Setup the shroted link, just like below:

js/privatebin.js: insert after line(2154)

$pasteUrl[0].target = "_blank";

tpl/bootstrap.php: update SRI line(76)

<script type="text/javascript" data-cfasync="false" src="js/privatebin.js?<?php echo rawurlencode($VERSION); ?>" integrity="sha512-naSnfYqE+TO7YZVHhBfwPQqH+l2h5Xa0ut90DgsZElFxTpCFhxUOkOZU8YLEvETndxlLRJFtuKMat1aLecpQ5Q==" crossorigin="anonymous"></script>

[rugk]

Sounds like a reasonable change? For older browsers that have this systemtic vuln we should probably also set rel=noopener, though that is no issue if we adjust this.

Any other opinion?

BTW @Ervoconite if you are not scared to generate the SRI hashes (docs here), feel free to submit a PR and you will automatically also get the credit for the commits etc.