fix bug first time when snapshot is none
removed useless parameter in global md5 because global md5 is calculate only for local snapshot that is synchronized with server
remove useless sleep from filesystemoperator
reimplementation of update local full snapshot
fix file md5 calculation (abs path)
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Merge branch 'develop_fix_syncro' of github.com:marco64bit/share-system-team1 into develop_fix_syncro