Initial work on DataManager::Get.
Merge remote-tracking branch 'origin/vault' into data_manager

Conflicts:
	src/maidsafe/vault/pmid_node/dispatcher.cc
	src/maidsafe/vault/utils.cc
Merge remote-tracking branch 'origin/vault' into data_manager

Conflicts:
	src/maidsafe/vault/utils.h
Merge remote-tracking branch 'origin/vault' into data_manager
Minor updates.