Make the last session appear by default upon restarting

Developers working in multiple projects in most IDEs in the market, like: NetBeans, Eclipse, Visual Studio, Carbide.c++ are used to have their projects displayed in the "Projects" view when they restart the tool. In Qt Creator, projects disappear from the "Projects" view upon restart, and can only be reinstated by going to "Develop" / "Resume Session". This option is not obviously visible to developers used to other tools, so they might feel that Qt Creator doesn't save the project list and try to open all the projects by hand again.

The here suggestion is to make the last session's projects appear by default in the "Projects" view upon restart. That would avoid unnecessary work to get back to where they were before closing the tool. Developers wishing to work in another set of projects (a much rarer occurrence) can then go to "Develop / Manage Sessions" and proceed from there.