Move djangoq settings to base settings

Done to make djangoq settings accessible in production.
The sync setting is changed to the default False value since the run
order of the tasks is not relevant for our use case.
Mail sending functions have gotten a sync argument to force the tasks to
complete before checking their consequences in tests.

gregsite/settings/base.py

@@ -304,3 +304,15 @@ ORGREG_EXTRA_IDS = []
 # Acronyms to be imported as identifiers from orgreg. List of acronym values, supported ones are: nob, nno, eng
 # Example list: ["nob"]
 ORGREG_ACRONYMS = []
+
+# Settings related to Django-q used for scheduling tasks in the future.
+# We use it to queue creation of Notification objects related to roles when start/end dates are in the future
+Q_CLUSTER = {
+    "name": "greg",
+    "workers": 4,
+    "timeout": 90,
+    "retry": 120,
+    "queue_limit": 50,
+    "bulk": 10,
+    "orm": "default",
+}

gregsite/settings/dev.py

@@ -30,16 +30,12 @@ CEREBRUM_CLIENT = {
 }
 CEREBRUM_HIERARCHICAL_ACCESS = True
 
-Q_CLUSTER = {
-    "name": "greg",
-    "workers": 4,
-    "timeout": 90,
-    "retry": 120,
-    "queue_limit": 50,
-    "bulk": 10,
-    "orm": "default",
-    "sync": True,
-}
+
+Q_CLUSTER.update(
+    {
+        "sync": True,
+    }
+)
 
 AUTHENTICATION_BACKENDS = [
     "gregui.authentication.auth_backends.DevBackend",  # Fake dev backend