Rename "new" commands to "create"

[hanzei]

This is a great question. In the go code, I try to have the convention of "new" is usually just a memory allocation/simple init, fast and no error possible. "make" can fail. "create" is for creating new persisted entities.

However, I did not stick with the convention for the commands (why??) and in this case the function name is reflective of the command.

Originally posted by @levb in #27