update twitter bootstrap css and png's to version 2.1.1
add support for RSS feed.

add link tag in page header, to support subuscribe rss/atom feed in browsers.
Merge pull request #109 from mbauhardt/jb-development

update twitter bootstrap css and png's to version 2.1.1
Merge pull request #131 from Lax/feature_rss_atom

Add support for RSS Feed
Implementation of page/post sorting via optional weight meta-data.
merge the func of sorting pages