Handle 403 from group chat metadata endpoint

Fixes #151.

Author: Terrance

skpy/chat.py

@@ -39,9 +39,10 @@ def fromRaw(cls, skype=None, raw={}):
                                   auth=SkypeConnection.Auth.RegToken,
                                   params={"view": "msnp24Equivalent"}).json()
             except SkypeApiException as e:
-                if e.args[1].status_code != 404:
+                if e.args[1].status_code in (403, 404):
+                    active = False
+                else:
                     raise
-                active = False
             else:
                 raw.update(info)
             return SkypeGroupChat(skype, raw, **SkypeGroupChat.rawToFields(raw, active=active))