[FlickrBridge] Add filter by media and sort by options

[VerifiedJoseph]

Adds options for filtering by media and sorting by date/relevance to By keyword and By username.

Also:

• Adds function getURI()
• Adds function getName()
• Decodes item author, title and description using urldecode()
• Changes endpoint used by By username to https://www.flickr.com/search/?user_id=

Closes #1755

[em92]

Hi, @VerifiedJoseph !
"Sort by" option does not seem to be working. All items are in the same order.
https://feed.eugenemolotov.ru/pr1758/?action=display&bridge=Flickr&context=By+keyword&q=bird&media=photos&sort=relevance&format=Html
https://feed.eugenemolotov.ru/pr1758/?action=display&bridge=Flickr&context=By+keyword&q=bird&media=all&sort=date-posted-desc&format=Html
https://feed.eugenemolotov.ru/pr1758/?action=display&bridge=Flickr&context=By+keyword&q=bird&media=all&sort=date-taken-desc&format=Html
https://feed.eugenemolotov.ru/pr1758/?action=display&bridge=Flickr&context=By+keyword&q=bird&media=all&sort=interestingness-desc&format=Html

[VerifiedJoseph]

It should work now, @em92. I'd forgotten to update getURI() to use the value from getInput('sort'). Thank you for testing and pointing out the issue.

[em92]

gj @VerifiedJoseph !