Merge branch 'M2_roles_statistics' into 'milestone-2'

...st/java/cz/muni/fi/pa165/core/house/UnitTestHouseJPA.java

.../cz/muni/fi/pa165/model/dto/metrics/MetricsCreateDto.java

...n/java/cz/muni/fi/pa165/model/dto/metrics/MetricsDto.java

.../cz/muni/fi/pa165/model/dto/metrics/MetricsUpdateDto.java

.../java/cz/muni/fi/pa165/model/dto/role/CompanyRoleDto.java

...java/cz/muni/fi/pa165/model/dto/role/EmployeeRoleDto.java

...in/java/cz/muni/fi/pa165/model/dto/role/HouseRoleDto.java

...in/java/cz/muni/fi/pa165/model/dto/role/OwnerRoleDto.java

...n/java/cz/muni/fi/pa165/model/dto/role/RoleCreateDto.java

...rc/main/java/cz/muni/fi/pa165/model/dto/role/RoleDto.java

...n/java/cz/muni/fi/pa165/model/dto/role/RoleUpdateDto.java

...z/muni/fi/pa165/model/dto/role/enums/CompanyRoleEnum.java

.../cz/muni/fi/pa165/model/dto/role/enums/HouseRoleEnum.java

...a/cz/muni/fi/pa165/model/dto/role/enums/RoleTypeEnum.java

...muni/fi/pa165/model/dto/user/UserStatisticsCreateDto.java

...ni/fi/pa165/statistics/statistics/StatisticCreateDto.java

...i/fi/pa165/statistics/statistics/StatisticRepository.java

...muni/fi/pa165/statistics/statistics/StatisticService.java

...muni/fi/pa165/statistics/statistics/StatisticsFacade.java

...cz/muni/fi/pa165/statistics/statistics/UserStatistic.java