Maid-304_trim_pmid_manager_account

create a new message content type : DataNameAndSizeAndSpaceAndReturnCode
for the DeleteResponse from PmidNode to PmidManager
Can't move code_in. This looks like copy/paste error from https://github.com/maqi/MaidSafe-Network-Filesystem/blob/MAID-304_Trim_PMID_Manager_account/src/maidsafe/nfs/client/messages.cc#L687 . Please fix it at both places.