Add some linting rules for the CI (#587)

* enable one-var rule

* enable indent rule

* enable no-multiple-empty-lines rule

* enable no-empty rule

* enable no-trailing-spaces rule

* enable no-extra-semi rule

* add eslint rules to fix block spacing

* enable max-statements-per-line rule

* enable brace-style rule

* fix some spacing issues and add future rules

* add code suggestions

src/scripts/routes.js

@@ -447,6 +447,6 @@ define([
     defineRoute({
         path: "/",
         isDefaultRoute: true,
-        autoFocus: false,
+        autoFocus: false
     });
 });