[FlickrBridge] Add new bridge
[FlickrBridge] Add new bridge

This bridge is a mashup of the existing FlickrExploreBridge by sebsauvage
and FlickrTagBridge by erwang. It provides the same functionality as one
single bridge.

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