feat: Events / audit log (#1008)

* feat: Record events in DB

* feat: events API

* First pass, hacky activity feed

* WIP

* Reset dashboard

* feat: audit log UI
feat: store ip address

* chore: Document events.list api

* fix: command specs

* await event create

* fix: backlinks service

* tidy

* fix: Hide audit log menu item if not admin

app/components/Sidebar/Settings.js

@@ -10,6 +10,7 @@ import {
   UserIcon,
   LinkIcon,
   TeamIcon,
+  BulletedListIcon,
 } from 'outline-icons';
 import ZapierIcon from './icons/Zapier';
 import SlackIcon from './icons/Slack';
@@ -94,6 +95,13 @@ class SettingsSidebar extends React.Component<Props> {
                 icon={<LinkIcon />}
                 label="Share Links"
               />
+              {user.isAdmin && (
+                <SidebarLink
+                  to="/settings/events"
+                  icon={<BulletedListIcon />}
+                  label="Audit Log"
+                />
+              )}
               {user.isAdmin && (
                 <SidebarLink
                   to="/settings/export"