[TASK] Use strict

Gruntfile.js

 module.exports = function (grunt) {
+  "use strict";
+
   grunt.loadTasks("tasks");
 
   grunt.registerTask("default", ["bower-install-simple", "lint", "copy", "sass", "postcss", "requirejs:default", "inline"]);

app.js

+"use strict";
+
 require.config({
   baseUrl: "lib",
   paths: {

bower.json

@@ -18,7 +18,7 @@
     "es6-shim": "~0.35.1",
     "almond": "~0.3.2",
     "d3": "~3.5.17",
-    "roboto-fontface": "~0.3.0",
+    "roboto-fontface": "~0.4.5",
     "virtual-dom": "~2.1.1",
     "leaflet-providers": "~1.1.10",
     "rbush": "https://github.com/mourner/rbush.git#~1.4.3"

lib/about.js

 define(function () {
+  "use strict";
+
   return function () {
     this.render = function (d) {
       var el = document.createElement("div");

lib/container.js

 define([], function () {
+  "use strict";
+
   return function (tag) {
     if (!tag) {
       tag = "div";

lib/datadistributor.js

 define(["filters/nodefilter"], function (NodeFilter) {
+  "use strict";
+
   return function () {
     var targets = [];
     var filterObservers = [];

lib/filters/filtergui.js

-define([], function () {
+define(function () {
+  "use strict";
+
   return function (distributor) {
     var container = document.createElement("ul");
     container.classList.add("filters");

lib/filters/genericnode.js

 define(["helper"], function (helper) {
+  "use strict";
+
   return function (name, key, value, f) {
     var negate = false;
     var refresh;

lib/filters/nodefilter.js

-define([], function () {
+define(function () {
+  "use strict";
+
   return function (filter) {
     return function (data) {
       var n = Object.create(data);

lib/forcegraph.js

 define(["d3", "helper"], function (d3, helper) {
+  "use strict";
+
   var margin = 200;
   var NODE_RADIUS = 15;
   var LINE_RADIUS = 12;

lib/gui.js

@@ -5,6 +5,8 @@ define(["chroma-js", "map", "sidebar", "tabs", "container", "meshstats",
   function (chroma, Map, Sidebar, Tabs, Container, Meshstats, Legend, Linklist,
             Nodelist, SimpleNodelist, Infobox, Proportions, ForceGraph,
             Title, About, DataDistributor, FilterGUI) {
+    "use strict";
+
     return function (config, router) {
       var self = this;
       var content;

lib/infobox/link.js

 define(["helper"], function (helper) {
+  "use strict";
+
   function showStatImg(o, source, target) {
     var subst = {};
     subst["{SOURCE}"] = source;

lib/infobox/location.js

 define(["helper"], function (helper) {
+  "use strict";
+
   return function (config, el, router, d) {
     var sidebarTitle = document.createElement("h2");
     sidebarTitle.textContent = "Location: " + d.toString();

lib/infobox/main.js

 define(["infobox/link", "infobox/node", "infobox/location"], function (Link, Node, Location) {
+  "use strict";
+
   return function (config, sidebar, router) {
     var self = this;
     var el;

lib/infobox/node.js

 define(["moment", "tablesort", "helper", "moment.de"],
   function (moment, Tablesort, helper) {
+    "use strict";
+
     function showGeoURI(d) {
       function showLatitude(d) {
         var suffix = Math.sign(d) > -1 ? "' N" : "' S";

lib/legend.js

 define(function () {
+  "use strict";
+
   return function () {
     var self = this;
 

lib/linklist.js

 define(["sorttable", "virtual-dom", "helper"], function (SortTable, V, helper) {
+  "use strict";
+
   function linkName(d) {
     return (d.source.node ? d.source.node.nodeinfo.hostname : d.source.id) + " – " + d.target.node.nodeinfo.hostname;
   }

lib/locationmarker.js

 define(["leaflet"], function (L) {
+  "use strict";
+
   return L.CircleMarker.extend({
     outerCircle: {
       stroke: false,

lib/main.js

 define(["moment", "router", "leaflet", "gui", "helper", "moment.de"],
   function (moment, Router, L, GUI, helper) {
+    "use strict";
+
     return function (config) {
       function handleData(data) {
         var dataNodes = {};

lib/map.js

@@ -2,6 +2,8 @@ define(["map/clientlayer", "map/labelslayer",
     "leaflet", "moment", "locationmarker", "rbush", "helper",
     "leaflet.label", "leaflet.providers", "moment.de"],
   function (ClientLayer, LabelsLayer, L, moment, LocationMarker, rbush, helper) {
+    "use strict";
+
     var options = {
       worldCopyJump: true,
       zoomControl: false