Twitter: show full- and nickname
Add "proxy" mode: does't make the feed full-text

Useful for feedify (twitter, facebook, etc) and for bad written rss feeds in not-strong-enough news readers (eg. TPB on tt-rss). Uses "persistent" in Cache() so as not to empty the cache because of that (cause Cache() drops items not asked for).
Remove left-over logging line in feedify
Fix typo around cachePath

Identation was wrong in if/else statement
Feedify support for DuckDuckGo

Trying to work around google's bann
End of typo fox in cachePath