Fixed a minor bug in the Preferences dialog.

Also the fictitious bug fix for Logger added in fe65771 has been undone.
I've just realized that the Logger checkbox in the toolbars menu does
the job :-)

ChangeLog.txt

@@ -1,5 +1,8 @@
 ViTables ChangeLog
 ==================
+** June 07, 2017 **
+Fixed a minor bug in the Preferences dialog.
+
 ** June 06, 2017 **
 The plugins system has been slightly refactored and simplified.
 

vitables/preferences/preferences.py

@@ -85,6 +85,9 @@ def __init__(self):
         # Setup the page selector widget
         self.setupSelector()
 
+        # Display the General Settings page
+        self.stackedPages.setCurrentIndex(0)
+
         # Style names can be retrieved with qt.QStyleFactory.keys()
         styles = QtWidgets.QStyleFactory.keys()
         self.stylesCB.insertItems(0, styles)

vitables/vtapp.py

@@ -697,14 +697,6 @@ def fileExit(self):
         Saves current configuration on disk, closes opened files and exits.
         """
 
-        # Because configuration is always restored from the previous session
-        # we have to be careful with the Logger and make sure that it is neither
-        # closed nor floated
-        if not self.gui.logger_dock.isVisible():
-            self.gui.logger_dock.setVisible(True)
-        if self.gui.logger_dock.isFloating():
-            self.gui.logger_dock.setFloating(False)
-
         # Close all browsers
         if self.doc_browser:
             self.doc_browser.exitBrowser()