Don't use the deprecated quote parameter of escape() in contrib/atom.py

Signed-off-by: Armin Ronacher <armin.ronacher@active-4.com>
Added a changelog entry
Merge branch '0.9-maintenance'
Merge branch 'master' of github.com:mitsuhiko/werkzeug
s/compare_digest/digest_compare fixes #393
Merge branch '0.9-maintenance'