Comcast is making it even easier for its broadband subscribers to access the Internet outside the confines of their homes, CNET reports. For the past couple of years, the company, along with several other cable operators, has been building out a Wi-Fi network in public areas, such as train platforms and in small businesses such as cafes and retail locations, to allow its broadband customers mobile access to the Internet at no additional charge. On Monday, the company will make two announcements that will expand this network…