Logs:
* User enrolling in OATHAuth
* User un-enrolling in OATHAuth
* Scratch token used
* 2FA disabled via a maintenance script
* 2FA disabled via Special:DisableOATHForUser
* Logged in using OTP
* User attempted to enable 2FA using a scratch token
* User attempted to enable 2FA using an invalid OTP
Bug: T151010
Change-Id: Ie6ee610a11814616d34c3d9f5467a563f0db2df3
Since this repository has multi-licensed code, add GPL v2+ file headers
to code that had no licensing blocks to make it obvious which files
carry which license.
And add "AND GPL-3.0-or-later" to extension.json's license-name property
to make it clear that this extension does have code that isn't
redistributable under GPL v2.
Change-Id: Id3059fb9596527ef054bec9d89a28f1ccbe2113d
