Error clean up, error catching, require django <1.9

* cleaning up the error format in this function to match
  our standard format.
* Catching an error that can occur if the json is improperly decoded.
* fixing Django to the LTS support version as 1.9.1 breaks our automatic
  api documentation.

Change-Id: Ib3e452427989b376c55710ce33f73fabdc84260d

requirements.txt

@@ -1,4 +1,4 @@
-Django>=1.8.9
+Django>=1.8.9,<1.9
 decorator>=3.4.0
 djangorestframework>=3.0.3
 keystonemiddleware>=1.3.1

stacktask/api/v1/views.py

@@ -684,9 +684,13 @@ class TokenDetail(APIViewWithLogger):
                 data[field] = request.data[field]
             except KeyError:
                 errors[field] = ["This field is required.", ]
+            except TypeError:
+                errors = ["Improperly formated json. " +
+                          "Should be a key-value object.", ]
+                break
 
         if errors:
-            return Response(errors, status=400)
+            return Response({"errors": errors}, status=400)
 
         for action in actions:
             try: