PlatSim-related launch wizard changes: (1) Remember last connection created and offer this by default in the Select Connection dialog; (2) Immediately open New Connection dialog if debugging and no connections exist; (3) Split out SelectConnectionDialog; (4) Fix some wording in Select Connection dialog since this is not always an error situation.
Qt.core.label=Qt Core
Qt.gui.label=Qt GUI
Qt.console.template.label=Qt Console
Qt.gui.dialog.template.label=Qt GUI Dialog
Qt.gui.mainwindow.template.label=Qt GUI Main Window
Qt.gui.widget.template.label=Qt GUI Widget