IdStory Identity Manager

Done. Everything is in the develop.
Tests are included.
Documentation is here: https://wiki.czechidm.com/devel/documentation/synchronization/dev/synchronization#differential_sync_process_only_differences

Commit: https://github.com/bcvsolutions/CzechIdMng/commit/609e243ddf710450ea944a587d0f605d3d5a52d3

I did test(normal attribes, eav, guarantes) and code review, is awesome.
I like added date formatter to logs and sort of sync item in FE, thx!

I found just minor info / notes:
- i removed some unused import warnings and unify brackets [] to sync log messages.