This patch implements:
- noModule getter/setter for HTMLScriptElement
- the nomodule attribute for HTMLScriptElement
- the logic in nsScriptLoader that denies the loading of a nomodule script
- tests
Tag #618
This removes a ton of tests that are no longer relevant with (un)watch
removed (e.g. testing stability/bugs in the watchpoint system itself
which has never been the most stable), and updates others that would
previously rely on watch/unwatch, so that they don't unexpectedly fail.