CMSPage: Changed JS templates to not need data wrapper object, as Backbone.Layouts doesn't do the silly things vanilla Backbone does. 
Note: related View updates in later commit.
CMSPage: Removed moveUp/down logic from Block model.
CMSPage: Removed moveUp/down logic from Block model.
CMSPage: Backbone Models now extend a Base model class.
CMSPage: Small template changes.
CMSPage: Minor cosmetic changes to Block model