Merge pull request #12 from nromanen/master

Merge 19.12
Entities, relationships, DAOs, Servisces - DONE. Controllers and views - in process
Entities, relationships, DAOs, Servisces - DONE. Controllers and views - in process
Merge pull request #13 from nromanen/yurembo

Yurembo
Y
Merge pull request #14 from nromanen/yurembo

Y
Merge pull request #15 from nromanen/krivorotenko

Merge pull request #11 from nromanen/master
Merge pull request #16 from nromanen/master

Merge