Memory leak related to the tooltip component

- Open the app
- Click `+`
- Click "Create New Portfolio"
- Go through the flow
- After it's logged in, the following error is printed in DevTools:

```
warning.js:33 Warning: Can't call setState (or forceUpdate) on an unmounted component. This is a no-op, but it indicates a memory leak in your application. To fix, cancel all subscriptions and asynchronous tasks in the componentWillUnmount method.
in InnerPopper
in Popper (created by Tooltip)
in Manager (created by Tooltip)
in Tooltip (created by CreatePortfolioStep2)
in div (created by CreatePortfolioStep2)
in div (created by CreatePortfolioStep2)
in div (created by CreatePortfolioStep2)
in div (created by CreatePortfolioStep2)
in CreatePortfolioStep2 (created by View)
in View (created by LoginView)
in LoginView (created by Consumer)
in Consumer (created by Subscribe)
in Subscribe (created by CreatePortfolio)
in CreatePortfolio (created by LoginViews)
in LoginViews (created by Consumer)
```

@kevva Looks like the tooltip is not properly being cleaned up.