Removed method getApplicantsByGroupId from Applicant-manager to Group-manager and covered with tests on each layer
Merge remote-tracking branch 'origin/develop' into fix/MovedGetAllApplicantsInGroupToGroupManager

Conflicts:
	applicant-manager/src/main/java/com/softserveinc/ita/controller/ApplicantController.java
	group-manager/src/main/java/com/softserveinc/ita/controller/GroupController.java
	group-manager/src/main/java/com/softserveinc/ita/dao/GroupDao.java
	group-manager/src/main/java/com/softserveinc/ita/dao/impl/GroupDaoMockImpl.java
	group-manager/src/main/java/com/softserveinc/ita/service/GroupService.java
	group-manager/src/main/java/com/softserveinc/ita/service/impl/GroupServiceImpl.java
Merged MovedGetAllApplicantsInGroupToGroupManager with develop.
Merge pull request #58 from combats/fix/MovedGetAllApplicantsInGroupToGroupManager

Removed method getApplicantsByGroupId from Applicant-manager to Group-ma...