New documentation about deployment facilities

Signed-off-by: Clement Escoffier <clement.escoffier@gmail.com>
Add documentation about running chameleon as system service

Signed-off-by: Clement Escoffier <clement.escoffier@gmail.com>
Fix the download section of the index page

Signed-off-by: Clement Escoffier <clement.escoffier@gmail.com>
New documentation about packaging

Signed-off-by: Clement Escoffier <clement.escoffier@gmail.com>
Update site

Signed-off-by: Clement Escoffier <clement.escoffier@gmail.com>