Various updates to the fr-FR edition

Hello @Jermolene,

Here are various updates to the `fr-FR` edition + an addendum to the TabsMacro doc in the `tw5.com` edition (see https://github.com/xcazin/TiddlyWiki5/blob/2579553375a2bee6636a8430374eb8c816d8d2fe/editions/tw5.com/tiddlers/macros/TabsMacro.tid#L36).

Sorry for the spurious merge commits!