Do Not Track (DNT) is an old web standard in order to notify pages that
the user doesn't want to be tracked. Even while a lot of pages either
ignore this header or even worse, use it for tracking purposes, the
orignal intention of this header is good and should be adopted.
This patch implements a respect of the DNT header by no longer including
the optional Google Analytics and disqus integrations when sending a DNT
header. This should reduce outside resource usage and help to stay more
private.
This should later-on extended towards other document content (i.e.
iframe based content).
The reason to not change the CDN handling is that CDNs will be
deprecated with next release and removed in long term.
Signed-off-by: Sheogorath <sheogorath@shivering-isles.com>
This commit should fix existing problems with Disqus and Google
Analytics enabled in the meta-yaml section of a note.
Before this commit they were blocked by the strict CSP. It's still
possible to disable the added directives using `addDisqus` and
`addGoogleAnalytics` in the `csp` config section.
They are enabled by default to prevent breaking changes.
Signed-off-by: Sheogorath <sheogorath@shivering-isles.com>
