[FlickrExplore] Fix and improve bridge
[FlickrExplore] Fix and improve bridge

Instead of utilizing API requests for each element, the information
is now read directly from the source page, which provides information
as JSON data embedded in a script block.

The author name is returned for each element.

Improves the title and optionally adds the description if available

RSS-Bridge/rss-bridge,Frenzie/rss-bridge,GregThib/rss-bridge,kranack/rss-bridge,Riduidel/rss-bridge,ORelio/rss-bridge,ORelio/rss-bridge,kranack/rss-bridge,mro/rss-bridge,kranack/rss-bridge,kranack/rss-bridge,simonbru/rss-bridge,LogMANOriginal/rss-bridge,teromene/rss-bridge,Riduidel/rss-bridge,teromene/rss-bridge,RSS-Bridge/rss-bridge,RSS-Bridge/rss-bridge,Riduidel/rss-bridge,ORelio/rss-bridge,simonbru/rss-bridge,Frenzie/rss-bridge,mro/rss-bridge,LogMANOriginal/rss-bridge,sebsauvage/rss-bridge