There was two main problems with the feature
- The author name was not properly fetched so the feature which was
supposed to add the author of the blog post in the tweet never
worked -> this commit simply deletes it
- The code was considering the url length in the size of the tweet,
so if the url was 135 characters long, it considered that only 5
characters have to be taken in the selected text... which is wrong
as twitter URL are all shortened to 23 characters by twitter
opw-741530