add location to controller
add possibility rename category
add char_js
add design admin page
chenge config key in liquibase
fix delete admin or change
refactor names in subject service and user service
Merge branch 'master' into ivan

Conflicts:
	SSEL/src/main/java/com/softserve/entity/ConfigurationProperty.java
	SSEL/src/main/resources/messages_en.properties
	SSEL/src/main/resources/messages_ru.properties
	SSEL/src/main/resources/messages_ua.properties
	SSEL/src/test/java/com/softserve/tests/AdministratorServiceTest.java
:wq