Added class LocalMenuDataProvider.
Added entity MenuCategories and MenuItems to file LocalDataBase.*
Deleted protocol PServiceAgent.
Renamed class ServiceAgent to RemoteServiceAgent.
Created class LocalServiceAgent.
Added methods to class LocalServiceAgent:
	+ (NSArray *)executeFetchRequest:(NSFetchRequest *)request error:(NSError **)error;
	+ (NSUInteger) countForFetchRequest: (NSFetchRequest *)request error: (NSError **)error;
	+ (BOOL)save:(NSError **)error;
Created class LocalRequestMaker.
Added method to class - LocalRequestMaker:
	+ (NSFetchRequest*) fetchRequestWithEntity:(NSString*)entity;
Added methods in class LocalServiceAgent:
	+ (NSArray *) executeFetchRequestForEntity: (NSString *)entityName error: (NSError **)error;
	+ (NSUInteger) countForFetchRequestForEntity: (NSString *)entityName error: (NSError **)error;
	+ (id) insertNewObjectForEntityName: (NSString *)entityName;
	+ (BOOL) save: (NSError **)error;
	+ (void) deleteDataFromEntity: (NSString*)entityName;
	+ (BOOL) isDataInEntity: (NSString*)entityName;
Created class LocalMenuDataProvider.
Merge remote-tracking branch 'origin/master'