Rename showGUI variable to blockGUI and added some comments in Config class

nw/gui/build.py

@@ -633,7 +633,7 @@ class GuiBuildNovel(QDialog):
             if not path.isdir(saveDir):
                 saveDir = self.mainConf.homePath
 
-            if self.mainConf.showGUI:
+            if self.mainConf.blockGUI:
                 dlgOpt  = QFileDialog.Options()
                 dlgOpt |= QFileDialog.DontUseNativeDialog
                 saveTo  = QFileDialog.getSaveFileName(
@@ -745,7 +745,7 @@ class GuiBuildNovel(QDialog):
             errMsg = "Unknown format"
 
         # Report to user
-        if self.mainConf.showGUI:
+        if self.mainConf.blockGUI:
             if wSuccess:
                 self.theParent.makeAlert(
                     "%s file successfully written to:<br> %s" % (