No intro sound when opening the game for the first time

[thetravis]

When opening the web page for the first time, there is no "Sakarin villapaitapeli" intro. This had huge impact on my game experience and I've heard reports of many gamers abondoning the game due to lack of proper intro.

The problem is due to play() method failing: "Uncaught (in promise) DOMException: play() failed because the user didn't interact with the document first". It can be preproduced in Chrome browsers (v. >66). This is intended behaviour of Chrome browser.

Solution: Force user to make input before starting the game or play the intro after clicking "Aloita".