refactor: flow typing (#1012)

* fix: padding

* fix: Minor button alignment issues

* feat: Add icon to invite people button

* WIP

app/menus/RevisionMenu.js

@@ -1,6 +1,6 @@
 // @flow
 import * as React from 'react';
-import { withRouter } from 'react-router-dom';
+import { withRouter, type RouterHistory } from 'react-router-dom';
 import { inject } from 'mobx-react';
 import { MoreIcon } from 'outline-icons';
 
@@ -13,9 +13,9 @@ import UiStore from 'stores/UiStore';
 
 type Props = {
   label?: React.Node,
-  onOpen?: () => *,
-  onClose: () => *,
-  history: Object,
+  onOpen?: () => void,
+  onClose: () => void,
+  history: RouterHistory,
   document: Document,
   revision: Revision,
   className?: string,
@@ -23,7 +23,7 @@ type Props = {
 };
 
 class RevisionMenu extends React.Component<Props> {
-  handleRestore = async (ev: SyntheticEvent<*>) => {
+  handleRestore = async (ev: SyntheticEvent<>) => {
     ev.preventDefault();
     await this.props.document.restore(this.props.revision);
     this.props.ui.showToast('Document restored');