Make deprecation warnings more clear (#5996)

* Add these as warnings

To be removed in next major version

* Make ACP search's purpose more clear

* Only warn once per deprecated path

public/language/en-GB/admin/menu.json

@@ -65,7 +65,7 @@
 	"logout": "Log out",
 	"view-forum": "View Forum",
 
-	"search.placeholder": "Search...",
+	"search.placeholder": "Search for settings",
 	"search.no-results": "No results...",
 	"search.search-forum": "Search the forum for <strong></strong>",
 	"search.keep-typing": "Type more to see results...",

src/routes/index.js

@@ -170,6 +170,9 @@ module.exports = function (app, middleware, hotswapIds, callback) {
 		res.redirect(relativePath + '/assets/uploads' + req.path + '?' + meta.config['cache-buster']);
 	});
 
+	// only warn once
+	var warned = new Set();
+
 	// DEPRECATED
 	var deprecatedPaths = [
 		'/nodebb.min.js',
@@ -188,8 +191,11 @@ module.exports = function (app, middleware, hotswapIds, callback) {
 	];
 	app.use(relativePath, function (req, res, next) {
 		if (deprecatedPaths.some(function (path) { return req.path.startsWith(path); })) {
-			winston.verbose('[deprecated] Accessing `' + req.path.slice(1) + '` from `/` is deprecated. ' +
+			if (!warned.has(req.path)) {
+				winston.warn('[deprecated] Accessing `' + req.path.slice(1) + '` from `/` is deprecated to be REMOVED in NodeBB v1.7.0. ' +
 				'Use `/assets' + req.path + '` to access this file.');
+				warned.add(req.path);
+			}
 			res.redirect(relativePath + '/assets' + req.path + '?' + meta.config['cache-buster']);
 		} else {
 			next();
@@ -197,8 +203,11 @@ module.exports = function (app, middleware, hotswapIds, callback) {
 	});
 	// DEPRECATED
 	app.use(relativePath + '/api/language', function (req, res) {
-		winston.verbose('[deprecated] Accessing language files from `/api/language` is deprecated. ' +
+		if (!warned.has(req.path)) {
+			winston.warn('[deprecated] Accessing language files from `/api/language` is deprecated to be REMOVED in NodeBB v1.7.0. ' +
 			'Use `/assets/language' + req.path + '.json` for prefetch paths.');
+			warned.add(req.path);
+		}
 		res.redirect(relativePath + '/assets/language' + req.path + '.json?' + meta.config['cache-buster']);
 	});