Merge branch 'empty_json_metadata' into 'master'

returned to original json_metadata empty string instead of {}

See merge request !65

hivemind/tavern/tags_api_patterns/get_discussions_by_blog.pat.json

@@ -619,7 +619,7 @@
     "created": "2016-03-30T18:30:18",
     "curator_payout_value": "0.756 HBD",
     "depth": 0,
-    "json_metadata": "{}",
+    "json_metadata": "",
     "last_payout": "2016-08-24T19:59:42",
     "last_update": "2016-03-30T18:30:18",
     "max_accepted_payout": "1000000.000 HBD",

hivemind/tavern/tags_api_patterns/get_discussions_by_blog/tag_limit.pat.json

@@ -619,7 +619,7 @@
     "created": "2016-03-30T18:30:18",
     "curator_payout_value": "0.756 HBD",
     "depth": 0,
-    "json_metadata": "{}",
+    "json_metadata": "",
     "last_payout": "2016-08-24T19:59:42",
     "last_update": "2016-03-30T18:30:18",
     "max_accepted_payout": "1000000.000 HBD",

hivemind/tavern/tags_api_patterns/get_discussions_by_comments.pat.json

@@ -73,7 +73,7 @@
     "created": "2016-03-30T19:52:30",
     "curator_payout_value": "0.000 HBD",
     "depth": 1,
-    "json_metadata": "{}",
+    "json_metadata": "",
     "last_payout": "2016-08-24T19:59:42",
     "last_update": "2016-03-30T19:52:30",
     "max_accepted_payout": "1000000.000 HBD",

hivemind/tavern/test_database_api_patterns.tavern.yaml

@@ -289,8 +289,6 @@ test_name: Hivemind database_api.list_comments patterns test order "by_parent" n
 
 marks:
   - patterntest # first 2 params are required
-  - failing
-  - xfail # title
 
 includes:
   - !include common.yaml