Update workshop-2017.html
Update workshop-2017.html

Added Katie O'Leary to PC members and alphabetized list.
ubicomp-mental-health/ubicomp-mental-health.github.io,saeed-abdullah/ubicomp-mental-health.github.io,ubicomp-mental-health/ubicomp-mental-health.github.io,saeed-abdullah/ubicomp-mental-health.github.io