DEV: enable no-alert & no-console eslint rules

app/assets/javascripts/preload-application-data.js.no-module.es6

@@ -47,6 +47,7 @@
     }
 
     if (Discourse.Environment === "development") {
+      /* eslint-disable no-console  */
       if (e) {
         if (e.message || e.stack) {
           console.log(e.message);
@@ -57,6 +58,7 @@
       } else {
         console.log("A promise failed but was not caught.");
       }
+      /* eslint-enable no-console  */
     }
 
     window.onerror(e && e.message, null, null, null, e);