Newest Members 1.6

This update introduces bootstrap 4 support to the newest members screenshots

VisioList 1.7 moved the join_date to the stats table to improve ranking performance.

Now supporting urls with a hash in the url. Only important if you show screenshots

The footer was missing its language tag for the heading which prints "newest members"

Changed the update url in the info file to reflect our new plugins page.
This update is required if you want to run plugin version checks from within your admin panel, as the old update url is obsolete.
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Moved more screenshot html into own template files so they can be overwritten using plugin child feature