IdStory Identity Manager

I made two new processors for IdmPasswordDto: PasswordDeleteProcessor and PasswordSaveProcessor.

I also checked behavior with lastSuccessfulLogin date (behavior for get first login date), the last sucessful login date works correctly.

commit: https://github.com/bcvsolutions/CzechIdMng/commit/56f124f719c0cfa5c737a3a6b43ca0a65e93f6ff (branch: 8.1.3-hotfix)

I didn't include test, because password changed is tested good.

I did test and review, it works and code looks nice, thx!

I've just added note into doc: https://wiki.czechidm.com/devel/documentation/architecture/dev/events#implemented_processors