Change report modal to include category selection in web UI (#17565)

* Change report modal to include category selection in web UI

* Various fixes and improvements

- Change thank you text to be different based on category
- Change starting headline to be different for account and status reports
- Change toggle components to have a checkmark when checked
- Fix report dialog being cut off on small screens
- Fix thank you screen offering mute or block if already muted or blocked
- Refactor toggle components in report dialog into one component

* Change wording on final screen

* Change checkboxes to be square when multiple options are possible

app/javascript/mastodon/features/report/statuses.js

@@ -0,0 +1,58 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import { connect } from 'react-redux';
+import StatusCheckBox from 'mastodon/features/report/containers/status_check_box_container';
+import { OrderedSet } from 'immutable';
+import { FormattedMessage } from 'react-intl';
+import Button from 'mastodon/components/button';
+
+const mapStateToProps = (state, { accountId }) => ({
+  availableStatusIds: OrderedSet(state.getIn(['timelines', `account:${accountId}:with_replies`, 'items'])),
+});
+
+export default @connect(mapStateToProps)
+class Statuses extends React.PureComponent {
+
+  static propTypes = {
+    onNextStep: PropTypes.func.isRequired,
+    accountId: PropTypes.string.isRequired,
+    availableStatusIds: ImmutablePropTypes.set.isRequired,
+    selectedStatusIds: ImmutablePropTypes.set.isRequired,
+    onToggle: PropTypes.func.isRequired,
+  };
+
+  handleNextClick = () => {
+    const { onNextStep } = this.props;
+    onNextStep('comment');
+  };
+
+  render () {
+    const { availableStatusIds, selectedStatusIds, onToggle } = this.props;
+
+    return (
+      <React.Fragment>
+        <h3 className='report-dialog-modal__title'><FormattedMessage id='report.statuses.title' defaultMessage='Are there any posts that back up this report?' /></h3>
+        <p className='report-dialog-modal__lead'><FormattedMessage id='report.statuses.subtitle' defaultMessage='Select all that apply' /></p>
+
+        <div className='report-dialog-modal__statuses'>
+          {availableStatusIds.union(selectedStatusIds).map(statusId => (
+            <StatusCheckBox
+              id={statusId}
+              key={statusId}
+              checked={selectedStatusIds.includes(statusId)}
+              onToggle={onToggle}
+            />
+          ))}
+        </div>
+
+        <div className='flex-spacer' />
+
+        <div className='report-dialog-modal__actions'>
+          <Button onClick={this.handleNextClick}><FormattedMessage id='report.next' defaultMessage='Next' /></Button>
+        </div>
+      </React.Fragment>
+    );
+  }
+
+}