Cleaning up the Package

[emilieschario]

Issue

Closes #25, #47, and #48

Solution

This PR:

• deletes the no-longer-used lookml file
• adds the PK to the page views model (based on where the unique test on the model is)
• adds the additional filter for bot traffic

[emilieschario]

@jtcohen6 @eogilvy12 These are super small changes closing some issues I noticed. This is ready for review. 👍

[jtcohen6]

@emilieschario I checked out these changes locally, and it looks like all of our integration tests are passing. (They don't seem to be triggered on PRs opened from forks?)

I think this PR nicely rounds out a new release, which would include my recent tweaks in #51 and #53

[emilieschario]

@jtcohen6 Sounds great to me 👍

[drewbanin]

Thanks for making these updates! Approved and merging :)