Supporting changes:
* Automatically register JavaScript files in the
tests/qunit/ext.popups/ directory.
Additional changes:
* Fix a grammatical error in the docblock for
mw.popups.createExperiment.
Change-Id: Ieb00709e353f0b960375fdaa0ca0dcdf950f2eb9
Changes:
* Make grunt:qunit run all QUnit tests in those modules whose names
being with "ext.popups".
* Add ext.popups/index.js, which initialises the mw.popups namespace.
* Add ext.popups/userSettings.js, which contains the code that deals
with interacting with the User Agent's storage.
* Add ext.popups/experiment.js, which contains the code that that
decides whether or not the user is in the experiment condition.
* Add tests for both units, converting existing tests where appropriate.
* Remove the associated code from ext.popups.core/ext.popups.core.js.
* Finally, dispatch the BOOT action against the store in
ext.popups/boot.js.
Change-Id: I697207677304bd49c7cfe1d37bb0a4af7810f387