Give App Nice Clean Name

[mguh22]

Now Chrome Dev Editor is no longer being actively developed, it makes no sense to have the unsightly (developer preview) in the title of the stable build.

As such my proposed file change removes the (developer preview) to make the App have a nice and clean name within the Chrome environment.

[googlebot]

Thanks for your pull request. It looks like this may be your first contribution to a Google open source project. Before we can look at your pull request, you'll need to sign a Contributor License Agreement (CLA).

:memo: Please visit https://cla.developers.google.com/ to sign.

Once you've signed, please reply here (e.g. I signed it!) and we'll verify. Thanks.

---

• If you've already signed a CLA, it's possible we don't have your GitHub username or you're using a different email address. Check your existing CLA data and verify that your email is set on your git commits.
• If you signed the CLA as a corporation, please let us know the company's name.

[mguh22]

I signed it!

[googlebot]

CLAs look good, thanks!

[ussuri]

I have no objections. @devoncarew, how about you?

[ussuri]

After an internal discussion between the former CDE team, this change gets a green light :)