Set 'required' as the content compression resistance priority for left and right labels on departure cells
Set 'required' as the content compression resistance priority for left and right labels on departure cells

Fixes #577 - Layout issues with long destination description (https://github.com/OneBusAway/onebusaway-iphone/issues/577)

chadsy/onebusaway-iphone,cathy810218/onebusaway-iphone,themonki/onebusaway-iphone,cathy810218/onebusaway-iphone,themonki/onebusaway-iphone,ualch9/onebusaway-iphone,chadsy/onebusaway-iphone,aaronbrethorst/onebusaway-iphone,cathy810218/onebusaway-iphone,OneBusAway/onebusaway-iphone,aaronbrethorst/onebusaway-iphone,OneBusAway/onebusaway-iphone,OneBusAway/onebusaway-iphone,chadsy/onebusaway-iphone,ualch9/onebusaway-iphone,aaronbrethorst/onebusaway-iphone,aaronbrethorst/onebusaway-iphone,themonki/onebusaway-iphone,OneBusAway/onebusaway-iphone,themonki/onebusaway-iphone,themonki/onebusaway-iphone,ualch9/onebusaway-iphone,cathy810218/onebusaway-iphone,chadsy/onebusaway-iphone,ualch9/onebusaway-iphone,ualch9/onebusaway-iphone,OneBusAway/onebusaway-iphone