Idea: Support scraping of links from Twitter feeds

[Jermolene]

In order to be able to post links from any device as fast as possible, I'd like to submit links via Twitter.

A contributor could register the URL of a twitter account instead of a TIddlyWiki. We could use a convention such as the hashtag #tiddlywikilinks to indicate links, with other hashtags being applied to the link, and the text left over after removing the link being the body text.

I think this kind of thing is straightforward with the Twitter API, but we may want to cache previously read tweets in the repo to keep API usage low.