Handle feature_set errors automatically

Recreate the mastodon object if there's an error complaining about a missing feature set. Only happens for status_post I think. Could be further generalized...

brutaldon/views.py

@@ -16,6 +16,7 @@ from brutaldon.forms import (
 from brutaldon.models import Client, Account, Preference, Theme
 from mastodon import (
     Mastodon,
+	MastodonIllegalArgumentError,
     AttribAccessDict,
     MastodonError,
     MastodonAPIError,
@@ -83,7 +84,7 @@ def get_usercontext(request, feature_set="mainline"):
             Account.MultipleObjectsReturned,
         ):
             raise NotLoggedInException()
-        mastodon = get_mastodon()Mastodon(
+        mastodon = Mastodon(
             client_id=client.client_id,
             client_secret=client.client_secret,
             access_token=user.access_token,
@@ -810,6 +811,7 @@ def settings(request):
         )
 
 def status_post(account, request, mastodon, **kw):
+    while True:
         try:
             mastodon.status_post(**kw)
         except MastodonIllegalArgumentError as e:
@@ -820,10 +822,14 @@ def status_post(account, request, mastodon, **kw):
             account, mastodon = get_usercontext(request,
                                                 feature_set=feature_set)
 
-		return status_post(account, request, mastodon, **kw)
+            continue
         except TypeError:
+            # not sure why, but the old code retried status_post without a
+            # content_type keyword, if there was a TypeError
             kw.pop("content_type")
-		return status_post(account, request, mastodon, **kw)
+            continue
+        else:
+            break
     return account, mastodon
 
 @never_cache
@@ -888,7 +894,7 @@ def toot(request, mention=None):
                 ].source.privacy
             try:
                 status_post(
-					account, mastodon,
+                    account, request, mastodon,
                     status=form.cleaned_data["status"],
                     visibility=form.cleaned_data["visibility"],
                     spoiler_text=form.cleaned_data["spoiler_text"],