[processing] cosmetic improvements to gdal/ogr algs

Author: volaya

python/plugins/processing/algs/gdal/GdalAlgorithmDialog.py

@@ -22,16 +22,16 @@ def __init__(self, parent, alg):
 
         w = QWidget()
         layout = QVBoxLayout()
-        layout.setMargin(9)
+        layout.setMargin(0)
         layout.setSpacing(6)
         label = QLabel()
         label.setText("GDAL/OGR console call")
         layout.addWidget(label)
         self.text = QPlainTextEdit()
-        self.text.setEnabled(False)
+        self.text.setReadOnly(True)
         layout.addWidget(self.text)
         w.setLayout(layout)
-        self.layout().addWidget(w)
+        self.layoutMain.addWidget(w)
 
         self.connectParameterSignals()
         self.parametersHaveChanged()