Added gplv3 licence headers to new classes
Prevented a bug whene the InteractiveCarousel is rendered (onSelection(0) is called at this point) before being populated.
Finished the new informational header. Closes #153
 + Made the app quicker to load the booklet by minimising the DOM requests. + Inquired the loading bug of the booklet, it loads well but took too much time. Fixed #154