Implementing next category
Implementing next category
Setting rule IDs in mainwindow
Minor refactoring in MainWindow
Added unit test to test next topic
Merge branch 'next-topic'

Conflicts:
	src/chatbot/front-end/ruleeditwidget.cpp
	src/chatbot/front-end/ruleeditwidget.h
Merge branch 'master' into clue

Conflicts:
	src/chatbot/back-end/appfacade.cpp
Localized new strings