fixes to atom feeds
move git gc to beginning of scraper
less likely to exceed OS filename length limit
Washington post parser
show washpo on front page
parse nyt reviews properly; seems to have changed online
Fixed baseparser to handle relative URLs

The feed_urls() method prepend the domain name if not present
but it generates a wrong url if the href attribute was relative
(no '/' at the beginning) to a <base href"">.

See for example http://www.elysee.fr/toutes-les-actualites/ :

<base href="http://www.elysee.fr/">
<a href="conseils-des-ministres/article/compte-rendu-du-conseil-des-ministres-du-26-juin-201/">
Merge pull request #19 from newsdiffs-fr/fix-relative-urls-parser

Fixed baseparser to handle relative URLs