- fixed main POM for logging

- introduced JSON wrapper
UD-23

- created JSON wrapper for User

Maintenance
- added 'test-output' to .gitignore
UD-23

created JSON schemas for
- Gorup
- User list

created Language enumeration

actualised the code quality rule set
UD-23

- fixed eclipse-formatter !!!!
- created WordClass enumeration
- created AssociationType enumeration
- fixed Language enumeration
- started using LOMBOK for minimizing boilerplate code
UD-23

- created JSON schema for Association
- created JSON schema for Dictionary
- fixed JSON schema for Group
- created JSON schema for Share
- fixed JSON schema for User
- created JSON schema for Word