Revert "Don't install a pointer input when there are no user actions"

This reverts commit 3b58741b6354bb543a158b9fa241d443860d63df.

Reason for revert: Breaks the STL demo and probably flexiglass as well.

Change-Id: I3b62ad2cc8c4b9ce00577fc71ef0930a86a5a103
4 files changed