merge InterviewSheduller/getAppointemntByID feature with develop
Merge pull request #1 from combats/InterviewScheduler/getAppointmentByID

Interview scheduler/getappointmentbyID feature merge with develop
DAO-Service refactoring
Merge HttpRequestService to develop;
Added DateValidation
Added DateValidation
Merge branch 'develop' into develop_candidate_1

Conflicts:
	DAO/src/com/softserveinc/ita/dao/AppointmentDAOImpl.java
	DAO/src/main/java/com/softserveinc/ita/dao/AppointmentDAO.java
	README.md
	common/src/main/resources/spring-config.xml
	entity/src/main/java/com/softserveinc/ita/entity/Appointment.java
	entity/src/main/java/com/softserveinc/ita/entity/exceptions/DateException.java
	http-request-service/pom.xml
	interview-sheduller/src/main/java/com/softserveinc/ita/controller/AppointmentController.java
	interview-sheduller/src/main/java/com/softserveinc/ita/service/AppointmentService.java
	interview-sheduller/src/main/java/com/softserveinc/ita/service/AppointmentServiceMock.java
	interview-sheduller/src/main/resources/interview-sheduller-spring-config.xml
	interview-sheduller/src/main/webapp/WEB-INF/mvc-dispatcher-servlet.xml
	interview-sheduller/src/test/java/com/softserveinc/ita/BaseMVCTest.java
	interview-sheduller/src/test/java/com/softserveinc/ita/mvc/AppointmentTests.java
	pom.xml
merged with develop