Gui: Use our own ToolBar class in all places

src/Mod/BIM/BimStatusBar.py

@@ -117,7 +117,7 @@ def setStatusIcons(show=True):
             if statuswidget:
                 statuswidget.show()
             else:
-                statuswidget = QtGui.QToolBar()
+                statuswidget = FreeCADGui.UiLoader().createWidget("Gui::ToolBar")
                 statuswidget.setObjectName("BIMStatusWidget")
                 s = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/General").GetInt("ToolbarIconSize", 24)
                 statuswidget.setIconSize(QtCore.QSize(s,s))

src/Mod/BIM/bimcommands/BimIfcExplorer.py

@@ -106,7 +106,7 @@ class BIM_IfcExplorer:
         self.dialog.setObjectName("IfcExplorer")
         self.dialog.setWindowTitle(translate("BIM", "Ifc Explorer"))
         self.dialog.resize(720, 540)
-        toolbar = QtGui.QToolBar()
+        toolbar = FreeCADGui.UiLoader().createWidget("Gui::ToolBar")
 
         layout = QtGui.QVBoxLayout(self.dialog)
         layout.addWidget(toolbar)

src/Mod/BIM/bimcommands/BimViews.py

@@ -81,7 +81,7 @@ class BIM_Views:
             size = FreeCAD.ParamGet(
                 "User parameter:BaseApp/Preferences/General"
             ).GetInt("ToolbarIconSize", 24)
-            toolbar = QtGui.QToolBar()
+            toolbar = FreeCADGui.UiLoader().createWidget("Gui::ToolBar")
             toolbar.setIconSize(QtCore.QSize(size, size))
             dialog.horizontalLayout.addWidget(toolbar)
             for button in [

src/Mod/Draft/DraftGui.py

@@ -205,7 +205,7 @@ class DraftToolBar:
 
         # add only a dummy widget, since widgets are created on demand
         self.baseWidget = DraftBaseWidget()
-        self.tray = QtWidgets.QToolBar(None)
+        self.tray = FreeCADGui.UiLoader().createWidget("Gui::ToolBar")
         self.tray.setObjectName("Draft tray")
         self.tray.setWindowTitle("Draft tray")
         self.toptray = self.tray