section management functions
pushed manage sections
Merge remote-tracking branch 'origin/develop' into develop

Conflicts:
	src/main/java/com/yoga/studio/controller/SectionController.java
	src/main/java/com/yoga/studio/dao/impl/SectionDAOImpl.java
	src/main/java/com/yoga/studio/model/Course.java
	src/main/java/com/yoga/studio/model/User.java
	src/main/webapp/WEB-INF/views/listCourses.jsp
	src/main/webapp/resources/include/adminmenu.jsp