Calendar does not properly allow/disable event editing/dragging

There are two issues.

1. The Prevent editing events via drag-and-drop Views Checkbox actually did the opposite action. Checking Prevent was allowing editing.
2. The events had a editable=true by default, making any editable configurations useless.

Since, the edit-ability is not customizable by entity, I have taken out that part of the code. Also, I just relabeled the views config field so it makes more sense.