This sets the third-party cookie policy.
- I created a new ThirdPartyCookiePolicy() class, since this setting seems to be
unique in the way it is set...
- I set the default to 'never', which is the most secure/private setting, but
*may* break *some* features of a (very) limited number of sites; these are
usually "non-critical" features.
For example, on Stack Exchange sites you're logged in all 200+ sites if you
sign in on one of them, this features required 3rd party cookies. You can
still sign in with out, but you have to do so 200+ times (this is actually the
only example I've ever noticed).
AFAIK all "major" browsers accept 3rd-party cookies by default, except for
Safari. Firefox also made this change, but reversed it (see:
https://brendaneich.com/2013/05/c-is-for-cookie/), but they don't offer any
good arguments to *not* have it IMHO, at least not that I could find.
In any case, in my humble opinion "secure and private by default" is the best
way to ship. But you're of course free to change it if you disagree ;-)
This makes qutebrowser.config.websettings much easier to understand, and saves
all defaults so it can restore them properly when a setting is set to an empty
string.
Before, when we set the fonts to empty strings instead of the true default, in
some cases anti-aliasing was broken.
Fixes#549.
We already attempted this in c5a2039da4, but
having the directories as module attributes means they'll be created on start
(rather than when they're actually used), and it'd also be impossible to change
them after init for some reason in the future.
To still have a nice short API, we simply change the attributes to functions.
Our home-brewn enum wasn't really liked by pylint (many no-member errors), so
instead of adding some workaround, we just use the python 3.4 enum instead.
This however also means we need to depend on Python 3.4 and not 3.3. Maybe we
should use enum34 on Python < 3.3.
