Add configuration option to use express-minify for CSS and JS

lib/config.js

@@ -25,7 +25,8 @@ var defaults = {
     http: {
         host: "",
         port: 8080,
-        domain: "http://localhost"
+        domain: "http://localhost",
+        minify: false
     },
     https: {
         enabled: false,

lib/web/webserver.js

@@ -184,6 +184,11 @@ module.exports = {
         app.use(express.json());
         app.use(express.urlencoded());
         app.use(express.cookieParser());
+
+        if (Config.get("http.minify")) {
+            app.use(require("express-minify")());
+            Logger.syslog.log("Enabled express-minify for CSS and JS");
+        }
         /* Order here is important
          * Since I placed /r/:channel above *, the function will
          * not apply to the /r/:channel route.  This prevents