reformatting; introduced Read More formatting

1. Everything (save for the sitemap generator, which is third-party and really
   messy) was reformatted to satisfy PEP8 and PyFlakes error detector (even
   though it still whines about try-import-except’s, but it always does)
2. Introduced Read More formatting, separate for index and RSS.  Note that
   all index.tmpl files are changed!

Signed-off-by: Kwpolska <kwpolska@gmail.com>
Undoing the Read More (it was broken anyway)

Signed-off-by: Kwpolska <kwpolska@gmail.com>
Merge pull request #274 from Kwpolska/master

Reformatting with Flake8