BUG: new messages to person that is not sharing

Conversation recipient validated

- Conversation foreign recipient not required to be validated.
- Added 'peter' as spec_helper user.
- New fixture, new statistic values.

- Clearer identifier names
Merge pull request #5449 from margori/3016_block_messages_to_not_sharing_user

BUG: new messages to person that is not sharing
Disable spring while generating secret token

That causes a cyclic dependency on spring being
loaded otherwise.
Fix order of poll answers
Merge pull request #5471 from svbergerem/fix-poll-answer-order

Fix order of poll answers
fix some typos in the changelog [ci skip]
Bump open_graph_reader