Remove most callsites to Controller->renderHandlesForPHIDs()

Summary: Ref T7689. This moves most of the easy/testable callsites off Controller->renderHandlesForPHIDs().

Test Plan:

• Viewed a file; viewed author; viewed "attached" tab.
• Viewed a mock; viewed attached tasks.
• Viewed a credential; viewed "Used By".
• Viewed a paste; viewed author; viewed forks; viewed forked from.
• Viewed a dashboard; viewed panel list.
• Viewed a dashboard panel; viewed "Appears On".
• Viewed a Phortune account; viewed "Members"; viewed payment methods.
• Viewed a Phortune merchant account; viewed "Members".
• Viewed Phortune account switcher; viewed "Accounts".
  • I just removed "Members:" here since it felt kind of out-of-place anyway.
• Viewed a Phragment fragment, viewed "Latest Version", viewed "Snapshots".
• Viewed a Phargment snapshot, viewed "Fragment".

Reviewers: btrahan

Reviewed By: btrahan

Subscribers: hach-que, epriestley

Maniphest Tasks: T7689

Differential Revision: https://secure.phabricator.com/D12207