[V3 Core] Encoding issue fix (#1365)

* Don't let the system encoding screw with things,
specify opens as happening with utf-8 encoding

* And also deal with encoding issues because windows is a special snowflake
(see: #1366)

* let's just use the encoding param in str() rather than encode/decode...

redbot/core/events.py

@@ -140,7 +140,10 @@ def init_events(bot, cli_flags):
 
         print(Fore.RED + INTRO)
         print(Style.RESET_ALL)
-        print(bordered(INFO, INFO2, ascii_border=ascii_border))
+        print(
+            str(bordered(INFO, INFO2, ascii_border=ascii_border),
+                encoding='utf-8', errors='replace')
+        )
 
         if invite_url:
             print("\nInvite URL: {}\n".format(invite_url))