New class to handle event logging.
Logger: Added Domain and Path
logger: Added: signin, login, password change, CSRF failure and permission denied events
logger: Added: password_reset and password_reset_request events
Updated some return value docs to help with autocomplete.
Allow the default configuration path to be set by code.
Baselogger: fix error log level
Add redirectUrl() to allow redirects that don’t force a call through Url().
Add support for controllers in plugins.

- Autoload controllers with all autoloader maps.
- When finding a controller check to see if it
  belongs to a plugin or application.
Merge branch 'feature/plugincontrollers' into feature/multisite
Remove Gdn_Controller->ControllerFolder.

The ControllerFolder is a really old artifact of pre 2.0 Vanilla. It was intended to allow for controllers nested into folders which ended up never being used.
dblogger: Add simple API, Update to use URL with domain,
Don’t dispatch to controllers that aren’t in a /controllers folder.
Merge pull request #1939 from vanilla/hotfix/fb-auth-embed-redirect

Added conditional target for forcefully embedded forum redirects.
Set the Gdn_Controller->Application to the name of the plugin if
dispatching to a plugin’s controller.
Allow Gdn_Dispatcher->ControllerArgumetns() to take a $Value parameter.
Merge branch 'feature/plugincontrollers' into feature/multisite
Revert change to editor config.
Trigger `change` event in preference group checks.
Fix some doc comments.