Added function to help build the URL used to download the page.
Added Html Agility Pack in order to parse HTML content
Added methods and cleaned code in order to make the program able to query the website to find out how many pages each chapter has and to find the full URL to download each image from.
Removed superfluous comments.
Initial implementation of FetchTotalNumberOfPagesForCurrentChapter().  This code is really ugly.
Corrected of-by-one error.
First working version. Includes saving the images to the file system.