more small changes, get_discussions_by_blog reusing bridge SQL function

hive/server/hive_api/community.py

@@ -311,7 +311,8 @@ async def _append_admins(db, communities):
     ids = communities.keys()
     sql = """SELECT community_id, ha.name FROM hive_roles hr
                JOIN hive_accounts ha ON hr.account_id = ha.id
-              WHERE role_id = 6 AND community_id IN :ids"""
+              WHERE role_id = 6 AND community_id IN :ids
+              ORDER BY ha.name"""
     for row in await db.query_all(sql, ids=tuple(ids)):
         _id = row[0]
         if 'admins' not in communities[_id]: