Well, it fixed itself. The only thing I did was go into the application manager and remove all the repositories that I had added earlier (I left that step for last because it was the most labor intensive). As soon as I did it I tried to run calender again and it didnt help, even after looking for updates. Later that day, calender view was back. I had not rebooted. Some sort of delayed effect, perhaps? I dont know, a minor mystery. Thank you everyone, for your kind assistance.