layout margins correction

Author: Cristian2299

src/sas/qtgui/Calculators/UI/DataOperationUtilityUI.ui

@@ -357,6 +357,9 @@ Append(Combine): |</string>
           <property name="focusPolicy">
            <enum>Qt::NoFocus</enum>
           </property>
+          <property name="frameShape">
+           <enum>QFrame::StyledPanel</enum>
+          </property>
          </widget>
         </item>
         <item row="2" column="1">
@@ -424,6 +427,12 @@ Append(Combine): |</string>
           <property name="focusPolicy">
            <enum>Qt::NoFocus</enum>
           </property>
+          <property name="frameShape">
+           <enum>QFrame::StyledPanel</enum>
+          </property>
+          <property name="frameShadow">
+           <enum>QFrame::Sunken</enum>
+          </property>
          </widget>
         </item>
         <item row="2" column="3">

src/sas/qtgui/Plotting/PlotterBase.py

@@ -45,7 +45,8 @@ def __init__(self, parent=None, manager=None, quickplot=False):
         # Set the layout and place the canvas widget in it.
         layout = QtWidgets.QVBoxLayout()
         # FIXME setMargin -> setContentsMargins in qt5 with 4 args
-        #layout.setContentsMargins(0)
+        layout.setContentsMargins(0, 0, 0, 0)
+        layout.setSpacing(0)
         layout.addWidget(self.canvas)
 
         # 1D plotter defaults