Add 'license-name' matching SPDX conventions
Add 'license-name' matching SPDX conventions

References:
http://spdx.org/licenses/
https://www.mediawiki.org/wiki/Manual:$wgExtensionCredits#license-name

Change-Id: I3debc1db6b821efeca07be05e1795f223d2fa621

wikimedia/mediawiki-extensions-Echo,wikimedia/mediawiki-extensions-Echo,wikimedia/mediawiki-extensions-Echo,wikimedia/mediawiki-extensions-Echo