In preparation for making use of Django 1.8's AppConfig for all our apps (and

in doing so, rename them to be reviewboard_* instead of *), we need to

explicitly define the db_table for existing models so as to retain backward

compatibility.
While I was going through here, I also defined verbose_name and

verbose_name_plural for every model, setting them to be localized strings in

title case. We had a mix of things in here, often only defining

verbose_name_plural when we had something that needed to pluralize with "ies"

instead of "s" (and not localized). A recent change added these for the

reviews models, but these were all in lower case.

Ran unit tests.
Started the devserver and looked through the db admin to see the new casing

  on localized strings.