* Update motherless.py for title selector
Updated the selector for the title property for Motherless galleries to be an h2 instead of an h1 to reflect changes on the site
* fix 'gallery_title' extraction
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Co-authored-by: Mike Fährmann <mike_faehrmann@web.de>
Video URLs can no longer be constructed from their thumbnail URLs. They
now need a valid `hash` query parameter or they yield a
'401 Unauthorized' error, thus requiring an extra request per video
to fetch their media page.