diff --git a/.eslintrc.json b/.eslintrc.json
index cf4de832..65b99e6e 100644
--- a/.eslintrc.json
+++ b/.eslintrc.json
@@ -14,6 +14,7 @@
 		}
     },
 	"rules": {
+		"no-prototype-builtins": "off",
 		"no-undef": "off",
 		"no-unused-vars": "off"
 	}
diff --git a/js/main.js b/js/main.js
index 465f1d45..7801ae3c 100644
--- a/js/main.js
+++ b/js/main.js
@@ -344,13 +344,14 @@ var MM = (function() {
 	 * Loads the core config and combines it with de system defaults.
 	 */
 	var loadConfig = function() {
+		let config = window.config;
 		if (typeof config === "undefined") {
-			config = defaults;
+			window.config = defaults;
 			Log.error("Config file is missing! Please create a config file.");
 			return;
 		}
 
-		config = Object.assign({}, defaults, config);
+		window.config = Object.assign({}, defaults, config);
 	};
 
 	/* setSelectionMethodsForModules()
diff --git a/modules/default/calendar/calendarfetcher.js b/modules/default/calendar/calendarfetcher.js
index c393d5d6..1e629a28 100644
--- a/modules/default/calendar/calendarfetcher.js
+++ b/modules/default/calendar/calendarfetcher.js
@@ -81,8 +81,7 @@ var CalendarFetcher = function(url, reloadInterval, excludedEvents, maximumEntri
 					past = moment().startOf("day").subtract(maximumNumberOfDays, "days").toDate();
 				}
 
-				// FIXME:
-				// Ugly fix to solve the facebook birthday issue.
+				// FIXME: Ugly fix to solve the facebook birthday issue.
 				// Otherwise, the recurring events only show the birthday for next year.
 				var isFacebookBirthday = false;
 				if (typeof event.uid !== "undefined") {
diff --git a/modules/default/weather/providers/ukmetoffice.js b/modules/default/weather/providers/ukmetoffice.js
index 884b5d98..dc617dd0 100755
--- a/modules/default/weather/providers/ukmetoffice.js
+++ b/modules/default/weather/providers/ukmetoffice.js
@@ -25,8 +25,7 @@ WeatherProvider.register("ukmetoffice", {
 	fetchCurrentWeather() {
 		this.fetchData(this.getUrl("3hourly"))
 			.then(data => {
-				if (!data || !data.SiteRep || !data.SiteRep.DV || !data.SiteRep.DV.Location ||
-					  !data.SiteRep.DV.Location.Period || data.SiteRep.DV.Location.Period.length == 0) {
+				if (!data || !data.SiteRep || !data.SiteRep.DV || !data.SiteRep.DV.Location || !data.SiteRep.DV.Location.Period || data.SiteRep.DV.Location.Period.length === 0) {
 					// Did not receive usable new data.
 					// Maybe this needs a better check?
 					return;
@@ -47,8 +46,7 @@ WeatherProvider.register("ukmetoffice", {
 	fetchWeatherForecast() {
 		this.fetchData(this.getUrl("daily"))
 			.then(data => {
-				if (!data || !data.SiteRep || !data.SiteRep.DV || !data.SiteRep.DV.Location ||
-					  !data.SiteRep.DV.Location.Period || data.SiteRep.DV.Location.Period.length == 0) {
+				if (!data || !data.SiteRep || !data.SiteRep.DV || !data.SiteRep.DV.Location || !data.SiteRep.DV.Location.Period || data.SiteRep.DV.Location.Period.length === 0) {
 					// Did not receive usable new data.
 					// Maybe this needs a better check?
 					return;
diff --git a/tests/configs/modules/positions.js b/tests/configs/modules/positions.js
index d56fab91..d2bf5ee9 100644
--- a/tests/configs/modules/positions.js
+++ b/tests/configs/modules/positions.js
@@ -9,7 +9,6 @@
 var config = {
 	port: 8080,
 	ipWhitelist: ["127.0.0.1", "::ffff:127.0.0.1", "::1"],
-	ipWhitelist: [],
 
 	language: "en",
 	timeFormat: 24,
@@ -19,6 +18,7 @@ var config = {
 			nodeIntegration: true,
 		},
 	},
+
 	modules:
 		// Using exotic content. This is why dont accept go to JSON configuration file
 		(function() {
diff --git a/tests/e2e/dev_console.js b/tests/e2e/dev_console.js
index 42f8ac99..8cddee1d 100644
--- a/tests/e2e/dev_console.js
+++ b/tests/e2e/dev_console.js
@@ -5,11 +5,11 @@ const describe = global.describe;
 const it = global.it;
 
 describe("Development console tests", function() {
-	// This tests fail and crash another tests
+	// FIXME: This tests fail and crash another tests
 	// Suspect problem with window focus
-	// FIXME
 	return false;
 
+	/* eslint-disable */
 	helpers.setupTimeout(this);
 
 	var app = null;
@@ -58,4 +58,5 @@ describe("Development console tests", function() {
 			return expect(app.browserWindow.isDevToolsOpened()).to.eventually.equal(true);
 		});
 	});
+	/* eslint-enable */
 });