Since angular attaches scope/injector/controller
into DOM it should clean up after itself. No need
to complain about memory leaks, since they can
only happened on detached DOM. Detached DOM would
only be in tests, since in production the DOM
would be attached to render tree and removal
would automatically clear memory.
this was never meant to be a public api used by apps. I refactored
the code to hide the functionality.
BREAKING CHANGE: $browser.addJs method was removed
apps that depended on this functionality should either use many of the
existing script loaders or create a simple helper method specific to the
app.
