i18n: expand FR/EN dictionary and render Overlays within the provider

Adds dictionary keys for Drive, Shares, Remote, Account, Admin, Quick-Upload, the
public share page, overlays and error pages, and moves <Overlays/> inside
<I18nProvider> so overlay default labels can be translated. Page string conversions
follow.

Author: softpython2884

apps/web/src/app/layout.tsx

@@ -54,8 +54,8 @@ export default function RootLayout({ children }: { children: React.ReactNode })
       <body className="min-h-screen font-sans">
         <I18nProvider>
           <AuthProvider>{children}</AuthProvider>
+          <Overlays />
         </I18nProvider>
-        <Overlays />
         <PwaRegister />
       </body>
     </html>