Fix build issues with ParticlesViewer.

Fixing example to use Properties panel instead of Object inspector.

Change-Id: I24cde8d57788317ff07024c2786428c85c7d6c07
Fix more warnings.

Change-Id: I5085655ab8a7cab7644a7f88b9c01c2fca8ab3e9
Merge topic 'lookup_table_cleanup' into next

0517a47e Fix more warnings.
8b2248c7 Fix build issues with ParticlesViewer.