Some hygiene for the touch explorer.

1. Removed the inactive pointer filtering which was not reporting pointers
   to the apps if they did not travel a minimal distance. This prohibits
   developemnt of apps with innovative interaction models such as using
   the screen as a virtual Braille keyboard.

2. We need the first pointer to travel some distance or a minimal amount of
   time to pass before deciding if the user explores or performs a gesture.
   In this period we were dropping events which was preventing inovative
   interfaces such as gesture based typing since we were chopping off a
   significant portion of the data.

Change-Id: I5c1aa98d14c83f356a9c59c93f4dc1f970c0faca

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