Add user invite codes (#393)

* Add mobile UIs for invite codes

* Update invite code UIs for web

* Finish implementing invite code behaviors (including notifications of invited users)

* Bump deps

* Update web right nav to use real data; also fix lint

src/state/models/ui/shell.ts

@@ -61,6 +61,10 @@ export interface WaitlistModal {
   name: 'waitlist'
 }
 
+export interface InviteCodesModal {
+  name: 'invite-codes'
+}
+
 export type Modal =
   | ConfirmModal
   | EditProfileModal
@@ -72,6 +76,7 @@ export type Modal =
   | RepostModal
   | ChangeHandleModal
   | WaitlistModal
+  | InviteCodesModal
 
 interface LightboxModel {}