Add a translation key for the blog

Could you add this key (xe.blog.categories.noentries)  here:
http://l10n.xwiki.org/xwiki/bin/inline/Platform/PlatformXWikiCoreResources
plz?
Or show me the way to do it.
(cherry picked from commit 09ebe72fabc03f8eb0b8c069097833e07f410e35)
Add a translation key for the blog
(cherry picked from commit 249e7db5bf4cfe1ac07711a72b58ee8c8a654d4d)