logger.setLevel(logging.INFO)
Bug fix and rewrite.

* Fixed a bug in byline_to_name() (flags=re.I) and imporoved it.
* Recovered the try_content() function and DRYed the find_title() using it.
* Supporting economist.com pubdate tag.
* Improving debugging facilities.
adding another testcase (arstechnica.com)
DRYing find_date() using try_find_date()
changed the name of the main input tag from "url" to "user_input"
Changed log file location to the main directory. + url = user_input