Google Code-in

Register on translatewiki.net, clone the ContentTranslation extension, find where the following three system messages are used and fix their qqq.json strings to make translators understand them:

• https://translatewiki.net/wiki/Thread:Support/About_MediaWiki:Apihelp-cxtoken-example-1/en
• https://translatewiki.net/wiki/Thread:Support/About_MediaWiki:Cx-tools-missing-link-mark-link/en
• https://translatewiki.net/wiki/Thread:Support/About_MediaWiki:Cx-tools-missing-link-mark-link/qqq