Merge branch 'next'

Conflicts:
	www/banners.json
	www/mirrors.json
	www/news.json
	www/releases.json
	www/templates/base.html
	www/templates/index.html
	www/templates/static/artwork.html
	www/templates/static/development.html
	www/templates/static/screenshots.html
	www/webapp/backend/tracker.py
	www/webapp/handlers.py

diff --cc www/templates/static/donation.html
Simple merge

diff --cc www/templates/static/features.html
Simple merge

diff --cc www/templates/static/imprint.html
Simple merge