Feature conversations muting (#3017)

* Add <ostatus:conversation /> tag to Atom input/output

Only uses ref attribute (not href) because href would be
the alternate link that's always included also.

Creates new conversation for every non-reply status. Carries
over conversation for every reply. Keeps remote URIs verbatim,
generates local URIs on the fly like the rest of them.

* Conversation muting - prevents notifications that reference a conversation
(including replies, favourites, reblogs) from being created. API endpoints
/api/v1/statuses/:id/mute and /api/v1/statuses/:id/unmute

Currently no way to tell when a status/conversation is muted, so the web UI
only has a "disable notifications" button, doesn't work as a toggle

* Display "Dismiss notifications" on all statuses in notifications column, not just own

* Add "muted" as a boolean attribute on statuses JSON

For now always false on contained reblogs, since it's only relevant for
statuses returned from the notifications endpoint, which are not nested

Remove "Disable notifications" from detailed status view, since it's
only relevant in the notifications column

* Up max class length

* Remove pending test for conversation mute

* Add tests, clean up

* Rename to "mute conversation" and "unmute conversation"

* Raise validation error when trying to mute/unmute status without conversation

2 files changed, 10 insertions, 1 deletions

diff --git a/db/migrate/20170301222600_create_mutes.rb b/db/migrate/20170301222600_create_mutes.rb
index 8f1bb22f5..4c27eca1e 100644
--- a/db/migrate/20170301222600_create_mutes.rb
+++ b/db/migrate/20170301222600_create_mutes.rb
@@ -7,6 +7,5 @@ class CreateMutes < ActiveRecord::Migration[5.0]
     end
 
     add_index :mutes, [:account_id, :target_account_id], unique: true
-
   end
 end
diff --git a/db/migrate/20170508230434_create_conversation_mutes.rb b/db/migrate/20170508230434_create_conversation_mutes.rb
new file mode 100644
index 000000000..81edf2733
--- /dev/null
+++ b/db/migrate/20170508230434_create_conversation_mutes.rb
@@ -0,0 +1,10 @@
+class CreateConversationMutes < ActiveRecord::Migration[5.0]
+  def change
+    create_table :conversation_mutes do |t|
+      t.integer :account_id, null: false
+      t.bigint :conversation_id, null: false
+    end
+
+    add_index :conversation_mutes, [:account_id, :conversation_id], unique: true
+  end
+end