Renewing ATC exceptions for Horizon

Jaromir and Liz have continued to provide significant UX input and
design for features being contributed to Horizon. Several features
reflect their contributions. The project would suffer without their
ongoing contribution and I would like their efforts to be formally
recognized.

Change-Id: I63884702da5ccc02d3ee0b0a0a2d9c35a13e3a70
Merge "Renewing ATC exceptions for Horizon"