[Glitch] Rename JSX files with proper .jsx extension

Port 44a7d87cb1 to glitch-soc

Signed-off-by: Claire <claire.github-309c@sitedethib.com>

app/javascript/flavours/glitch/components/dismissable_banner.jsx

@@ -0,0 +1,51 @@
+import React from 'react';
+import IconButton from './icon_button';
+import PropTypes from 'prop-types';
+import { injectIntl, defineMessages } from 'react-intl';
+import { bannerSettings } from 'flavours/glitch/settings';
+
+const messages = defineMessages({
+  dismiss: { id: 'dismissable_banner.dismiss', defaultMessage: 'Dismiss' },
+});
+
+export default @injectIntl
+class DismissableBanner extends React.PureComponent {
+
+  static propTypes = {
+    id: PropTypes.string.isRequired,
+    children: PropTypes.node,
+    intl: PropTypes.object.isRequired,
+  };
+
+  state = {
+    visible: !bannerSettings.get(this.props.id),
+  };
+
+  handleDismiss = () => {
+    const { id } = this.props;
+    this.setState({ visible: false }, () => bannerSettings.set(id, true));
+  };
+
+  render () {
+    const { visible } = this.state;
+
+    if (!visible) {
+      return null;
+    }
+
+    const { children, intl } = this.props;
+
+    return (
+      <div className='dismissable-banner'>
+        <div className='dismissable-banner__message'>
+          {children}
+        </div>
+
+        <div className='dismissable-banner__action'>
+          <IconButton icon='times' title={intl.formatMessage(messages.dismiss)} onClick={this.handleDismiss} />
+        </div>
+      </div>
+    );
+  }
+
+}