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/view/com/auth/create/Step2.tsx

@@ -35,6 +35,7 @@ export const Step2 = observer(({model}: {model: CreateAccountModel}) => {
             Invite code
           </Text>
           <TextInput
+            testID="inviteCodeInput"
             icon="ticket"
             placeholder="Required for this provider"
             value={model.inviteCode}