style: fail the pipeline if tslint has errors (#11)

* style: fail the pipeline if tslint has errors

* style: remove trailing whitespace

azure-pipelines.yml

@@ -18,5 +18,11 @@ steps:
 - script: |
     npm install
     npm run tslint
+    if [ $? -ne 0 ]; then
+        exit 1
+    fi
     npm run build
+    if [ $? -ne 0 ]; then
+        exit 1
+    fi
   displayName: 'npm install and build'

src/react/components/pages/appSettings/appSettingsForm.tsx

@@ -84,7 +84,7 @@ export class AppSettingsForm extends React.Component<IAppSettingsFormProps, IApp
                         onSubmit={(form) => this.props.onSubmit(form.formData)}>
                         <div>
                             <button
-                                type="submit" 
+                                type="submit"
                                 className="btn32px btn-success mr-1">
                                 {strings.appSettings.save}
                             </button>