Huge update for Server to use relationships (no more joins)
Created LabelsAssigned class for the labels relationship
Removed pricingForService() function
Removed now unused server cache forgets
Added YABs compare
Made YABs calls use relationship with disk and network table
Update YABs views to reflect access changes in data
Implemented cache for YABs
Added Server function serverYabsAmount() to count YABs for a server id
