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.
this api was never supposed to be public. nobody should be relying
on it.
I'm removing it since angular doesn't need it.
BREAKING CHANGE: $browser.addCss was removed
apps the depend on this functionality should write a simple utility
function specific to the app (see this diff for hints).
