Consolidate test store with global app store

[mstrofbass]

My theory is that the reason the enhancers wouldn't work with the test store is because of some weird import issues that resulted in the real createStore being called in src/stores/app.ts. We can bypass fixing #2336 and #2337 by just going straight to the global store.

This change does the following:

1. Adds a helper for clearing the store
2. Adds a helper for skipping the tutorial
3. Adds a helper for initializing the store that defaults to clearing the store and skipping the tutorial
4. Replaces all store references that originate with createTestStore with references directly to the store
5. Calls initStore in the beforeEach when appropriate.

Closes #2336
Closes #2337
Closes #2338

[raineorshine]

Thanks, this looks good to me. It accomplishes the goal of consolidating the test store with the global app store.

At this time there appears to be little difference between a single beforeEach(initStore) and a paired beforeEach(skipTutorial) and afterEach(clear), so I'm fine with the single initStore. We can keep them combined until there is a need otherwise.

[raineorshine]

Hi @mstrofbass. Just checking in on this. Could you take a look at the few small changes requested above? Then we should be able to get this merged. Thanks!

[mstrofbass]

Okay, should be good to go now.