creating atom feeds
links to atom feeds in appropriate pages

Conflicts:
	data/posts/2014-06-14-new-blog.md
tunings for the looks

 * no space after tag lists in posts
 * given up the separate color for visited links
 * corrected "h8" typo in the stylesheet (should have been "h6")
more fixes for the looks

 * correct header type for latest posts in the index page
 * removed author field from post/link list pages
Merge branch 'no-content'
second link list