R1:fd0da4c41f82

Rename "PHUIDocumentViewPro" to "PHUIDocumentView"

Summary: Ref T13077. There is no "PHUIDocumentView" so toss the "Pro" suffix from this classname.

Test Plan: Grepped for `PHUIDocumentView` and `PHUIDocumentViewPro`.

Reviewers: amckinley

Maniphest Tasks: T13077

Differential Revision: https://secure.phabricator.com/D19616