Fix some more setIcon() issues

Summary: Fixes T11569. This fixes a known bad setIcon(). I also looked for more calls to setIcon() without success, and stubbed setIcon() so we're in good shape even if more exist.

Test Plan:

• Grepped for setIcon( and manually inspect all 1,004 callsites to look for calls on PHUIObjectItemView objects.
• Grepped for "high risk" callsites (setIcon in file after PHUIObjectItemView) and re-examined them. I identified these files with this command:

git ls-tree -r --name-only HEAD | xargs pcregrep -i -M -H -c --files-with-matches -o 'PHUIObjectItemView(.|\n)*setIcon'

There might be some more clever way to do that.

• Since this only identified the callsites I already knew about and I don't have a ton of confidence that I didn't miss any, I put a stub in place that logs a deprecation warning. I'll file a followup to go clean these up in a month or so if the logs are clean.
• Loaded Nuance, saw it work but warn.
• Changed Nuance to use setStatusIcon(), loaded Nuance, no more fatal.

Reviewers: chad

Reviewed By: chad

Maniphest Tasks: T11569

Differential Revision: https://secure.phabricator.com/D16477