Make sure edit summary starts with bot

Due to bot policy all edit summaries of bot edits have to start with
"Bot:"

Related Task: [https://fs.golderweb.de/index.php?do=details&task_id=92 FS#92]

bots/markpages.py

@@ -134,7 +134,11 @@ class MarkPagesBot( CurrentPageBot ):  # sets 'current_page' on each treat()
 
         # Define edit summary
         summary = jogobot.config["red.markpages"]["mark_done_summary"].format(
-            reddisc=self.current_page.redfam.get_disc_link() )
+            reddisc=self.current_page.redfam.get_disc_link() ).strip()
+
+        # Make sure summary starts with "Bot:"
+        if not summary[:len("Bot:")] == "Bot:":
+            summary = "Bot: " + summary.strip()
 
         # Save
         self.put_current( self.new_text, summary=summary )