MDL-34397 dont write to cm_info properties
MDL-34397 (other issue?) function moveto_module does not modify properties of object
MDL-34397 do not write to cm_info properties
MDL-34397 Properties of cm_info are read-only and calculated on request
MDL-34397 caching in cm_info (unpolished)
MDL-34397 user section cache - unfinished
MDL-34397 prevent double caching
MDL-34397 restore back static cache
MDL-34397 remove  arg from seciton_info as not needed
squash with caches
MDL-34397 Changes to caching