Code refactoring according sonar rules
Merge remote-tracking branch 'origin/master'

Conflicts:
	admincentre-console/src/main/java/com/engagepoint/university/admincentre/Commands.java
	admincentre-console/src/main/java/com/engagepoint/university/admincentre/ConsoleController.java
	admincentre-console/src/main/java/com/engagepoint/university/admincentre/Main.java
Merge remote-tracking branch 'origin/master'

Conflicts:
	admincentre-console/src/main/java/com/engagepoint/university/admincentre/Commands.java
	admincentre-console/src/main/java/com/engagepoint/university/admincentre/ConsoleController.java
	admincentre-console/src/main/java/com/engagepoint/university/admincentre/Main.java