Updated airspace download link for Germany and added airspace download link for France
release 6.3.11
release 6.4_beta2
release 6.4
release 6.4.1
forum-template: Use absolute URLs due to new forum.xcsoar.org subdomain
js: Fixed ajax loading URLs
download/data: Updated link to austrian airspace file
_config.yml: Added server_url variable
js, css, img: Moved external libraries into lib folder
_includes/html_head: Moved Google Analytics code into separate JS file
_includes/html_head: Removed link to missing stylesheet
moved templates into their own folder
footer: Replaced statusbar images by CSS
Replaced buttons images by bootstrap CSS buttons
Replaced shadow images by CSS shadows
index: Repaired sidebar links
css: Removed unused #details styles
_layouts, _includes: Fixed indentation
_layout: Merged trac layout into included header file