Jenkins: Update Firefox via Sauce to 59.0 (#3343)
Jenkins: Update Firefox via Sauce to 59.0 (#3343)


KWierso/treeherder,edmorley/treeherder,edmorley/treeherder,edmorley/treeherder,KWierso/treeherder,KWierso/treeherder,KWierso/treeherder,edmorley/treeherder