added expandable panel with functioning filters

Authors: David Rubenstein, Alex Rutfield, Alex Stylos

Change-Id: I7e7111edd9b42b4cf3f96dc5b7f50bf51040533f

Change-Id: I7e7111edd9b42b4cf3f96dc5b7f50bf51040533f

Change-Id: I7e7111edd9b42b4cf3f96dc5b7f50bf51040533f