Changed the FirefoxOS :active:hover css selector workaround to use onenter rather than ondown events as it seemed more appropriate and re-presses the control on re-entering a control

Changed the FirefoxOS :active:hover css selector workaround to use onenter rather than ondown events as it seemed more appropriate and re-presses the control on re-entering a control

Enyo-DCO-1.1-Signed-off-by: Jason Robitaille <jason@canuckcoding.ca>