[IPHONEAPP-642] Fixed distinction of 'No meals this day' and 'No matching items' for HallMenuViewController
[IPHONEAPP-642][IPHONEAPP-667]
Added MealEmpty flag to MealReference so there is no chance of a nil mealName
Merge branch '3.4-dev' of github.com:MIT-Mobile/MIT-Mobile-for-iPhone into 3.4-dev