100 years of Wembley Stadium told through 100 matches. Hundreds of thousands of fans, 5, 000 were on the pitch, and a horse called Billy. That was the scene for the inauspicious first football match to be played at the British Empire Exhibition Stadium back in 1923, soon to be known as Wembley. More than a century later, Wembley remains the world's most famous football stadium. Watching your te…