Show account name of blurred content

Add the name of the twitter account being hidden in the text that obscures the tweet. Preferably, leave the avatar and name portion of the original tweet unaltered.

No file or test is named in the issue. Start by locating the Chrome extension code that identifies and blurs tweets, then trace how the tweet’s text, avatar, and account name are rendered; done means the obscuring text includes the Twitter account name while the original avatar and name portion remain unaltered.

Written by the indexing model from the issue text.