Fix and update i18n QUnit test breakages
* mediawiki.language.test:
Was broken for a while because the setup/teardown set
language.data instead of language.data.values so each test
resulted in:
> TypeError: Cannot read property 'en' of undefined
Also stored the copy in the QUnit module context instead
of in the shared scope.
* mediawiki.cldr.test: Update QUnit pattern.
- Removed redundant Initial check
- '--' from test name
- test()'s expect count argument
- Superfluous comments, its just assert.equal it should go
without saying at this point through the unit tests what
the 2nd and 3rd are.
* mediawiki.cldr.test:
Fixed trailing comma in commented out code and whitespace
warnings.
Change-Id: I95de3bb551efd7993cfcfba4a5cc3f310e7d6805