Updated eye tracking client

Signed-off-by: Brandyn A. White <bwhite@dappervision.com>
Updated tracker with higher res and better smoothing

Signed-off-by: Brandyn A. White <bwhite@dappervision.com>
Cleaned up debugging messages
Log glass javascript exceptions to the webapp's js console too (place where you can run scripts from)
Updated SDK and build tools to 19 tracking the Android Studio Canary versions

Signed-off-by: Brandyn A. White <bwhite@dappervision.com>
Fix simple json casting error in WS.data
Added dump/load/plot to eye tracking

Signed-off-by: Brandyn A. White <bwhite@dappervision.com>
Added mahalanobis distance and mixture of gaussians

Signed-off-by: Brandyn A. White <bwhite@dappervision.com>