Adds currency to rich snippets

The offer will not be displayed without the iso currency. There will be collisions in currencies such as AUD CAD and USD, without the sign.
[*] BO : AdminImport, check choosen scv exists
[*] BO : AdminImport, check choosen csv exists
// import WIP
Merge pull request #1042 from Dh42/patch-14

Adds currency to rich snippets
// test git
Merge branch 'bootstrap' of https://github.com/PrestaShop/PrestaShop into bootstrap

Conflicts:
	controllers/admin/AdminImportController.php
Merge branch 'bootstrap' of https://github.com/PrestaShop/PrestaShop into bootstrap