We need a new homepage template based on the new base template (T282113) which incorporates the carousel (T282114) and implements the remaining functionality.
* [[ https://docs.google.com/document/d/1nOp6PkxpSKsMRA5G7IBqlwsgaIhXLJRr_copVrJU-RE/edit | Homepage design specification ]]
**Acceptance criteria**
* Logged out users see this template instead of a logged out version of the current homepage.
* Users who don't meet the criteria don't advance past the login page. Instead, the criteria update to display why they don't qualify*
* Hovering over the information button displays the additional help text.
* Successful logins send users to the existing homepage in the logged in state.
* Users who are already logged in should be redirected through to My Library as if they just logged in.
*This should reflect existing functionality of this element.