Update gsitemap.php

Trimmed the ending slash in Context::getContext()->shop->virtual_uri in case there's one, since in_array won't find it that way. Also added Context::getContext()->shop->physical_uri, since image URLs were getting corrupted for multishop sites because of its omission.
Update gsitemap.php
Update gsitemap.php

fixed image urls in the other functions that also add them, not just _getProductLink
Merge branch 'master' of https://github.com/kazeno/PrestaShop-modules into kazeno-master
Google Sitemap : Version number changed (v2.3.3)
Merge branch 'master' of https://github.com/PrestaShop/PrestaShop-modules