FIX: Ensure SSViewer::hasTemplate() is aware of themes.
To do this, RequestHandler::definingClassForAction() has been created, splitting out the code that looks up the class that defines a given action into its own method. This is then overridden in Controller to look at templates.
allowed_actions is now only allowed to reference public methods defined
on the same Controller as the allowed_actions static, and
the wildcard "*" has been deprecated
Controller (and subclasses) failed to enforce $allowed_action restrictions
on parent classes if a child class didn't have it explicitly defined.
Controllers which are extended with $allowed_actions (through an Extension)
now deny access to methods defined on the controller, unless this class also has them in its own
$allowed_actions definition.
The entire framework repo (with the exception of system-generated files) has been amended to respect the 120c line-length limit. This is in preparation for the enforcement of this rule with PHP_CodeSniffer.
SECURITY More solid URL checks in Director::is_site_url(), using a conservative parse_url() hostname comparison rather than Director::makeRelative(), which is not designed for security purposes
