Logger: adding global levels mechanism

Logger.setLevel(level, bool) to turn on/off that log level for the
global handlers
Removing unnecessary Jasmine plugins
Upgrading tests to using Jasmine 2.0
View: moving .rendered() call to postrender event

It is more maintainable to only have the pre and post render events as
opposed to having those and a third semantically identical variant.
Class: using single quotes