Fix copy paste
- now remaps every type of network id, fixing storage entities
- fixed building ID not being reset for new pastes
- refactored pasting code so it more closely resembles SaveRestore.Load()
- fixed rotation of pastes not always working
- save entities in order of network id so the pasting is more deterministic
- removed saving of entity ids in pastes because it's not needed
- change paste directory from EntityCopies -> copypaste