PPRESS_Session invalidates caches #15
Description
Setting the WP_SESSION_COOKIE in src/Classes/PPRESS_Session.php invalidates our varnish caches, which causes the page to be slowed down massively of course. There is a ppress_should_start_session filter in public function should_start_session, but this method is called before the functions.php code of the theme is evaluated, as the ProfilePress\Core\Base::get_instance(); is called immediatly on plugin-discovery, which makes the filters unaccessible from the theme-code.