GUI: Add SC_TabBar, emits signal on drag hovers or normal mouse hovers
setTabBar( new SC_TabBar ) for SC_TabWidgetCloseAll and enabled instant
tab switching for SC_SimulateTab on drags.
Also cleaned up some GUI code formatting

git-svn-id: http://simulationcraft.googlecode.com/svn/trunk@18101 3b4652a1-8050-0410-ac47-3d40261b0f8b
GUI: Enable moving of SC_SimulateTab's Tabs, also forgot virtual keywords

git-svn-id: http://simulationcraft.googlecode.com/svn/trunk@18102 3b4652a1-8050-0410-ac47-3d40261b0f8b
GUI: Results tab's are moveable and have the drag switch functionality, also fixed invariant

git-svn-id: http://simulationcraft.googlecode.com/svn/trunk@18103 3b4652a1-8050-0410-ac47-3d40261b0f8b