Should reopen previously opened chat tabs on abrupt exit
As Spark application can crash or its process can be forced to exit, it could be useful to preserve a list of currently opened tabs and reopen them upon relaunching the app (same as browsers do). Maybe the default option could be to always reopen tabs if chat window hasn't been closed by a user. As some users might prefer for Spark to not reopen tabs, there should be an option to disable it. Default setting could be to reopen tabs on start.