Add default not found page

[escalopa]

Goal

Create a not found page 📄 to render on all the unfound routes

Solution

In this page, we show one of 2 widgets

Widget 1️⃣ (If user authenticated)

Show button (or href link) to redirect user back to home page

Widget 2️⃣ (If user unauthenticated)

Show 2 buttons (or href link) to login/signup

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Beside these 2 widgets, we are going to have a common text

Whoops! 
Looks like this page went on vacation

P.S text can be changed, we can pick another joke 😃