i18n: Add GENDER support to epoa-visible and epca-visible

Spotted by Siebrand
https://translatewiki.net/wiki/Thread:Support/About_MediaWiki:Epca-visible/en
https://translatewiki.net/wiki/Thread:Support/About_MediaWiki:Epoa-visible/en

Change-Id: I220762642d566fadac7ac6bd2c6702decb54afa4
Merge "i18n: Add GENDER support to epoa-visible and epca-visible"