Create PDF everytime

[minamotorin]

This script create PDF every running. Is there any reason? If there are no reason, create PDF only when all links and images are fetched is good idea. Because creating PDF takes time.

The condition in python is here:

((not self.obstinatePages) and len(self.pageLinkDict) == len(downloadService.pagesFetched))

As another idea, add option to create PDF is second way. Normaly program didn't create PDF and create PDF only with option.