An additional `div` markup is wrapped around each router component by `withQuicklink` HOC

**Describe the bug**
As you can see in the HOC, we have an additional `div` markup wrapping around the `Component` (probably it would be a route component) so inserting that `div` markup could break the app styling since the app styling does not expect another `div` to be inserted by withQuicklink HOC.

**To Reproduce**
If we use nest CSS selector without considering that `div`, we might break the styling.

**Expected behavior**
I hope we could avoid adding any wrapping markup around a route component if possible. At least, I hope we manage to avoid impacting the rest of the app as well as the styling in any case.

**Version:**
- Quicklink 2.0

cc @addyosmani @demianrenzulli