[TwitterBridge] Add option to disable image scaling in feeds
[TwitterBridge] Add option to disable image scaling in feeds

Images in Twitter feeds are currently being scaled by adding ':orig'
(original image) and ':thumb' (thumbnail) to image URIs in the feed.

This can cause issues with feed readers that don't handle colons in
URIs correctly.

Image scaling can now be disabled by adding '&noimgscaling=on' to the
query. This parameter is optional to stay compatible to existing feeds.

References #957

ORelio/rss-bridge,Frenzie/rss-bridge,ORelio/rss-bridge,kranack/rss-bridge,sebsauvage/rss-bridge,Riduidel/rss-bridge,kranack/rss-bridge,ORelio/rss-bridge,simonbru/rss-bridge,Riduidel/rss-bridge,simonbru/rss-bridge,RSS-Bridge/rss-bridge,kranack/rss-bridge,Frenzie/rss-bridge,RSS-Bridge/rss-bridge,RSS-Bridge/rss-bridge,Riduidel/rss-bridge,kranack/rss-bridge