Change default webide save button state to 'SAVED'

src/app/webide/webide.component.ts

@@ -32,7 +32,7 @@ export class WebideComponent implements OnInit {
   language = 'javascript';
   theme = 'monokai';
   files: string[];
-  saveButtonState = 'DIRTY';
+  saveButtonState = 'SAVED';
   command_handlers = { 'reload': this.reloadHandler.bind(this),
                        'read': this.readHandler.bind(this),
                        'select': this.selectHandler.bind(this),
@@ -74,6 +74,7 @@ export class WebideComponent implements OnInit {
 
   readHandler(data: SourceCode) {
     this.updateFileData(data);
+    this.saveButtonState = 'SAVED';
   }
 
   tabSwitchButtonHandler(file) {