Add deprecated endpoint redirection

server.js

@@ -341,6 +341,7 @@ redirect('/savequickreply', '/api/quick-replies/save');
 // Redirect deprecated image endpoints
 redirect('/uploadimage', '/api/images/upload');
 redirect('/listimgfiles/:folder', '/api/images/list/:folder');
+redirect('/api/content/import', '/api/content/importURL');
 
 // Redirect deprecated moving UI endpoints
 redirect('/savemovingui', '/api/moving-ui/save');