clarify difference between site and filter to allow 2 sites from same network, prompt to add site to db if missing

pyfpdb/fpdb.pyw

@@ -1232,6 +1232,7 @@ You can find the full license texts in agpl-3.0.txt, gpl-2.0.txt, gpl-3.0.txt an
         return response
 
     def validate_config(self):
+        # can this be removed now?
         if self.config.get_import_parameters().get('saveStarsHH'):
             hhbase    = self.config.get_import_parameters().get("hhArchiveBase")
             hhbase    = os.path.expanduser(hhbase)
@@ -1251,6 +1252,50 @@ You can find the full license texts in agpl-3.0.txt, gpl-2.0.txt, gpl-3.0.txt an
                 elif response == gtk.RESPONSE_NO:
                     self.select_hhArchiveBase()
 
+        # check if sites in config file are in DB
+        for site in self.config.get_supported_sites(True):    # get site names from config file
+            try:
+                self.config.get_site_id(site)                     # and check against list from db
+            except KeyError as exc:
+                log.warning("site %s missing from db" % site)
+                dia = gtk.MessageDialog(parent=None, flags=0, type=gtk.MESSAGE_WARNING, buttons=(gtk.BUTTONS_YES_NO), message_format="Unknown Site")
+                diastring = _("WARNING: Unable to find site  '%s'\n\nPress YES to add this site to the database.") % site
+                dia.format_secondary_text(diastring)
+                response = dia.run()
+                dia.destroy()
+                if response == gtk.RESPONSE_YES:
+                    self.add_site(site)
+
+    def add_site(self, site):
+        dia = gtk.Dialog( title="Add Site", parent=self.window
+                        , flags=gtk.DIALOG_DESTROY_WITH_PARENT
+                        , buttons=(gtk.STOCK_SAVE, gtk.RESPONSE_ACCEPT
+                                  ,gtk.STOCK_CANCEL, gtk.RESPONSE_REJECT)
+                        )
+
+        h = gtk.HBox()
+        dia.vbox.pack_start(h, padding=5)  # sets horizontal padding
+        label = gtk.Label( _("\nEnter short code for %s\n(up to 3 characters):\n") % site )
+        h.pack_start(label, padding=20)     # sets horizontal padding
+        #label.set_alignment(1.0, 0.5)
+        
+        h = gtk.HBox()
+        dia.vbox.add(h)
+        e_code = gtk.Entry(max=3)
+        e_code.set_width_chars(5)
+        h.pack_start(e_code, True, False, padding=5)
+
+        label = gtk.Label( "" )
+        dia.vbox.add(label) # create space below entry, maybe padding arg above makes this redundant?
+
+        dia.show_all()
+        response = dia.run()
+        site_code = e_code.get_text()
+        if response == gtk.RESPONSE_ACCEPT and site_code is not None and site_code != "":
+            self.db.add_site(site, site_code)
+            self.db.commit()
+        dia.destroy()
+
     def main(self):
         gtk.main()
         return 0