Implement Testimonial & Previous speakers section

[johnytiago]

For this one we have no already made template. You'll have to implement something similar to the one you can see here on the "Costumer Reviews" section.
It's a carousel. We will feature the most popular speakers we've had at our conference and display their testimonial. For the ones we have no testimonial we will just just display them in a 3 column arrangement with their name and position, at the time of the conference.