fix(review fetch): adapt scrapper to new review format

Site has removed all subnotes (look, smell, etc) and now always has a double
break line tag before reviews. Remove subnotes as well as serving type from
the review infos.

Some PEP8 and replace all print statements by logger.

Fixes #21
test(review scrapper): add test on review fetch

Check that scrapper actually returns a review string when it is present.

Refs #21
feat(size limit): add size limit check on review writer

Add size limit check on global writer, and use it in the call by review writer.
Replace all prints by log statements.

Moooar PEP8

Fixes #18