started kill instance feature
Made instace killing actually work
Made Offline user name default to 'Offline' if the textbox is left empty
Made main window hide on instace exit
Made main window hide on instace exit
Enough main window hiding magic for now
Added console coloring and made the log not contain any usernames/session ids
Use youtrack for bugs
Merge branch 'master' of https://github.com/Stiepen22/MultiMC5 into develop

Conflicts:
	AppSettings.cpp
	MultiMC.pro
	main.cpp