astrodatagui: NewStarDialog: implement dummy button clicked functions

astrodatagui/ui/NewStarDialog.py

@@ -8,3 +8,16 @@ class NewStarDialog(QDialog):
         classFileDir = os.path.dirname(os.path.abspath(__file__))
         absUiFilePath = os.path.join(classFileDir, "NewStarDialog.ui")
         uic.loadUi(absUiFilePath, self)
+
+        self.btFetchData.clicked.connect(self.btFetchData_clicked)
+        self.btOk.clicked.connect(self.btOk_clicked)
+        self.btCancel.clicked.connect(self.btCancel_clicked)
+
+    def btFetchData_clicked(self):
+        return
+
+    def btOk_clicked(self):
+        return
+
+    def btCancel_clicked(self):
+        return