JFG-591
+ create SessionMetaDataEntity to store user comment
+ SessionDataService have it's own entity manager to have ability to update data without pain
+ update getAll method in SessionDataService
+ create saveUserComment method in SessionDataService
+ create new property in WebClientProperties class that resposible for enabling view of user comments
merge with griddynamics master
code cleaning
- DtoDto
merge with master griddynamics
Merge pull request #402 from amikryukov/user-comments-ui

JFG-591 Design backend for custom comments from Jagger Web client