Sample Manager: save status file
Sample Manager: add load status file when loading samples
Sample Manager: do not add model and build id to samples hash; add header to status file
Sample Manager: rename sample csv to info file and make it tsv
Sample Manager: add help for info file
Sample Manager: status file is tab separated
Sample Manager: rework getting entities for samples
Sample Manager: update test
Merge remote-tracking branch upstream/$:{upbranch}