diff --git a/master.js b/master.js
index 6037a450..e9f18df0 100644
--- a/master.js
+++ b/master.js
@@ -83,10 +83,15 @@ app.set('views', path.join(__dirname, 'static'));
 app.set('view engine', 'html');
 app.engine('html', ejs.renderFile);
 
-var routes = require("./routes.js");
-routes(app);
-
+// give ejs access to some interesting information
+app.use(function(req, res, next){
+	res.locals.res = res;
+	res.locals.req = req;
+	res.locals.masterPlugins = masterPlugins;
+	next();
+});
 
+require("./routes.js")(app);
 // Set folder to serve static content from (the website)
 app.use(express.static('static'));
 // mod downloads
diff --git a/static/head.html b/static/head.html
index c503fe6b..943c3324 100644
--- a/static/head.html
+++ b/static/head.html
@@ -1,9 +1,9 @@
 <title>Clusterio</title>
-<link rel="stylesheet" type="text/css" href="style.css">
-<script src="external/jquery.js"></script>
-<script src="external/jquery-ui.js"></script>
-<script src="external/canvasjs.js"></script>
-<script src="external/moment.min.js"></script>
-<script src="external/mousetrap.min.js"></script>
-<script src="main.js"></script>
-<link href="external/css/Roboto.css" rel="stylesheet">
\ No newline at end of file
+<link rel="stylesheet" type="text/css" href="/style.css">
+<script src="/external/jquery.js"></script>
+<script src="/external/jquery-ui.js"></script>
+<script src="/external/canvasjs.js"></script>
+<script src="/external/moment.min.js"></script>
+<script src="/external/mousetrap.min.js"></script>
+<script src="/main.js"></script>
+<link href="/external/css/Roboto.css" rel="stylesheet">
diff --git a/static/main.js b/static/main.js
index a1b805f1..0f3d43bd 100644
--- a/static/main.js
+++ b/static/main.js
@@ -49,6 +49,24 @@ debugTools = {
 	}
 }
 
+let cachedInstanceNames = {};
+async function getInstanceName(instanceID){
+	let instance = cachedInstanceNames[instanceID];
+	if(!instance){
+		let slaves = await getJSON("/api/slaves");
+		try {
+			for(id in slaves){
+				cachedInstanceNames[id] = slaves[id].instanceName;
+			}
+		} catch(e){
+			console.log("Error while looking for instance name!");
+			console.log(e);
+		}
+		return cachedInstanceNames[instanceID] || instanceID;
+	} else {
+		return cachedInstanceNames[instanceID];
+	}
+}
 var g = {}
 contents = {
 	"iron-plate":100,
@@ -65,22 +83,27 @@ function djb2(str){
 }
 // callback(err, json)
 function getJSON(url, callback) {
-	var xhr = new XMLHttpRequest();
-	xhr.open('GET', url, true);
-	xhr.responseType = 'json';
-	xhr.onload = function() {
-	  var status = xhr.status;
-	  if (status == 200) {
-		callback(null, xhr.response);
-	  } else {
-		callback(status);
-	  }
-	};
-	// triggers if connection is refused
-	xhr.onerror = function(e){
-		callback(e);
-	};
-	xhr.send();
+	return new Promise((resolve, reject) => {
+		var xhr = new XMLHttpRequest();
+		xhr.open('GET', url, true);
+		xhr.responseType = 'json';
+		xhr.onload = function() {
+			var status = xhr.status;
+			if (status == 200) {
+				if(callback) callback(null, xhr.response);
+				resolve(xhr.response);
+			} else {
+				if(callback) callback(status);
+				resolve(status);
+			}
+		};
+		// triggers if connection is refused
+		xhr.onerror = function(e){
+			if(callback) callback(e);
+			reject(e);
+		};
+		xhr.send();
+	});
 };
 // callback(err, json)
 function postJSON(url, data, callback) {
@@ -89,12 +112,12 @@ function postJSON(url, data, callback) {
 	xhr.setRequestHeader('Content-Type', 'application/json; charset=UTF-8');
 	xhr.responseType = 'json';
 	xhr.onload = function() {
-	  var status = xhr.status;
-	  if (status == 200) {
+		var status = xhr.status;
+		if (status == 200) {
 		callback(null, xhr.response);
-	  } else {
+		} else {
 		callback(status);
-	  }
+		}
 	};
 	// triggers if connection is refused
 	xhr.onerror = function(e){
diff --git a/static/sidebar.html b/static/sidebar.html
index b24a4d2e..84f60cde 100644
--- a/static/sidebar.html
+++ b/static/sidebar.html
@@ -8,10 +8,15 @@
 	<a href="/"><div id="storage-menu" class="button-black menuItem">
 		<p>Storage</p>
 	</div></a>
-	<a href="nodes"><div id="slaves-menu" class="button-black menuItem">
+	<a href="/nodes"><div id="slaves-menu" class="button-black menuItem">
 		<p>Slaves</p>
 	</div></a>
-	<a href="settings"><div id="settings-menu" class="button-black menuItem">
+	<%# Very ugly ejs code to hide the Players button if the playerManager plugin isn`t installed %>
+	<% adsdf = "none"; masterPlugins.forEach(plug => {if(plug.pluginConfig.name == "playerManager"){ adsdf = "block" }}); %>
+	<a href="/playerManager" style="display:<%= adsdf %>"><div id="playerManager-menu" class="button-black menuItem">
+		<p>Players</p>
+	</div></a>
+	<a href="/settings"><div id="settings-menu" class="button-black menuItem">
 		<p>Settings</p>
 	</div></a>
 </div>
\ No newline at end of file