Added some hooks in animator to pass along expanded/animating/collapsed
state in a more clear manner. Added tooltip view with the teaser text to
animate in at the top of the view (and fade out either when we start
animating or automatically after 5 seconds).
Added prefs for tracking how often tooltip is shown/hiding it based on
that number.
Updated dimensions for correct spacing (based on redlines).
Test: Visually
Bug: 72528203
Change-Id: I70e4654ed95057fac6d8dbb890d575c2a5d9f215
db2cfa3609