perf: add eventbus unmount in more places and optimise stats tab

src/components/helpers/autocomplete/Autocomplete.jsx

@@ -48,6 +48,10 @@ export default class Autocomplete extends PureComponent {
     });
   }
 
+  componentWillUnount() {
+    EventBus.off('refresh');
+  }
+
   render() {
     let autocomplete = null;
 

src/components/modals/main/settings/sections/Stats.jsx

@@ -19,12 +19,16 @@ export default class Stats extends PureComponent {
         if (localStorage.getItem('stats') === 'false') {
           localStorage.setItem('statsData', JSON.stringify({}));
           return this.setState({
-            stats: JSON.parse(localStorage.getItem('statsData')) || {}
+            stats: {}
           });
         }
         this.forceUpdate();
       }
-    })
+    });
+  }
+
+  componentWillUnmount() {
+    EventBus.off('refresh');
   }
 
   render() {

src/components/modals/welcome/Welcome.jsx

@@ -81,6 +81,10 @@ export default class WelcomeModal extends PureComponent {
     });
   }
 
+  componentWillUnmount() {
+    EventBus.off('refresh');
+  }
+
   render() {
     return (
       <div className='welcomeContent'>

src/components/widgets/background/Background.jsx

@@ -355,6 +355,10 @@ export default class Background extends PureComponent {
     this.setBackground();
   }
 
+  componentWillUnmount() {
+    EventBus.off('refresh');
+  }
+
   render() {
     if (this.state.video === true) {
       const enabled = (setting) => {

src/components/widgets/greeting/Greeting.jsx

@@ -134,7 +134,7 @@ export default class Greeting extends PureComponent {
   }
 
   componentWillUnmount() {
-    EventBus.remove('refresh');
+    EventBus.off('refresh');
   }
 
   render() {

src/components/widgets/quicklinks/QuickLinks.jsx

@@ -131,7 +131,7 @@ export default class QuickLinks extends PureComponent {
   }
 
   componentWillUnmount() {
-    EventBus.remove('refresh');
+    EventBus.off('refresh');
   }
 
   render() {

src/components/widgets/quote/Quote.jsx

@@ -247,7 +247,7 @@ export default class Quote extends PureComponent {
   }
 
   componentWillUnmount() {
-    EventBus.remove('refresh');
+    EventBus.off('refresh');
   }
 
   render() {

src/components/widgets/search/Search.jsx

@@ -126,7 +126,7 @@ export default class Search extends PureComponent {
   }
 
   componentWillUnmount() {
-    EventBus.remove('refresh');
+    EventBus.off('refresh');
   }
 
   render() {

src/components/widgets/time/Clock.jsx

@@ -114,7 +114,7 @@ export default class Clock extends PureComponent {
   }
 
   componentWillUnmount() {
-    EventBus.remove('refresh');
+    EventBus.off('refresh');
   }
 
   render() {

src/components/widgets/time/Date.jsx

@@ -128,7 +128,7 @@ export default class DateWidget extends PureComponent {
   }
 
   componentWillUnmount() {
-    EventBus.remove('refresh');
+    EventBus.off('refresh');
   }
 
   render() {

src/components/widgets/weather/Weather.jsx

@@ -125,7 +125,7 @@ export default class Weather extends PureComponent {
   }
 
   componentWillUnmount() {
-    EventBus.remove('refresh');
+    EventBus.off('refresh');
   }
 
   render() {