preliminary work on version handler
More work on dispatcher type safety .
fully specialise DoOperation<DataManagerService, T*> -- get Compilation pass by commented out function call to service->HandleGet
Merge branch 'vault' of github.com:maidsafe/MaidSafe-Vault into vault

Conflicts:
	src/maidsafe/vault/data_manager/dispatcher.h
	src/maidsafe/vault/operation_handlers.cc
	src/maidsafe/vault/operation_handlers.h
correct the previous hidden DoOperation<MaidManagerService, DeleteRequestFromMaidNodeToMaidManager>
Merge remote-tracking branch 'origin/vault' into data_manager

Conflicts:
	src/maidsafe/vault/data_manager/dispatcher.cc
	src/maidsafe/vault/data_manager/dispatcher.h
	src/maidsafe/vault/data_manager/service.h
	src/maidsafe/vault/operation_handlers.h