Deleted blacklist.css

Leftover from an older experiment
Delete unused comments and other minor changes

Removed some options that were not in use. Changed some text in the UI.
More blacklisted selectors
Include the new blacklist.js file

Forgot to update the test file when making the earlier change to
calamine.
Refactoring functions in feed.js

Reorganization of code within feed.js. Moved some functions to other
files. Combined several functions. Cleaned up comments and whitespace.
Other minor changes.