Medium: cib: General cleanup and implementation of a client-side, file-based CIB
The client-side CIB allows us to do better regression testing and users to
experiement locally before commiting changes to the server.
By setting CIB_file=/path/to/file in the environment, all CRM CLI tools
automatically use the client-side API implementation

Mercurial revision: bfd0932d526df587ed025479289d5b08d01eb215