Implement automatic saving

src/app/webide/webide.component.ts

@@ -48,6 +48,7 @@ export class WebideComponent implements OnInit {
     this.requestCode();
     this.processManagerService.init();
     this.processManagerService.subscribeCallback('login', (event) => { this.setButtonStateSaved(); });
+    setInterval(() => { this.sendCodeIfDirty(); }, 10000);
   }
 
   subscribeWS() {
@@ -99,6 +100,12 @@ export class WebideComponent implements OnInit {
     this.processManagerService.restartProcess('login');
   }
 
+  sendCodeIfDirty() {
+    if (this.saveButtonState === 'DIRTY') {
+      this.sendCodeContents();
+    }
+  }
+
   sendCodeContents() {
     this.webSocketService.send(this.key_id, {
       'command': 'write',