This fixes below bugs:
* addReply() had used native compare operator for string ids
=> descendants may appears at wrong position
* CONTEXT_FETCH_SUCCESS had added the focused status as the reply of the *first* status in ancestors, not last status.
=> descendants may also appears wrong position as well as correct position
* TIMELINE_UPDATE had added the status to replies of *itself* instead of replied status
=> browser will hangs if you open the status due to a circular reference
This fixes below bugs:
* addReply() had used native compare operator for string ids
=> descendants may appears at wrong position
* CONTEXT_FETCH_SUCCESS had added the focused status as the reply of the *first* status in ancestors, not last status.
=> descendants may also appears wrong position as well as correct position
* TIMELINE_UPDATE had added the status to replies of *itself* instead of replied status
=> browser will hangs if you open the status due to a circular reference
* optimize direct timeline
* fix typo in class name
* change filter condition for direct timeline
* fix codestyle issue
* revoke index_accounts_not_silenced because direct timeline does not use it.
* revoke index_accounts_not_silenced because direct timeline does not use it.
* fix rspec test condition.
* fix rspec test condition.
* fix rspec test condition.
* revoke adding column and partial index
* (direct timeline) move merging logic to model
* fix pagination parameter
* add method arguments that switches return array of status or cache_ids
* fix order by
* returns ActiveRecord.Relation in default behavor
* fix codestyle issue
* optimize direct timeline
* fix typo in class name
* change filter condition for direct timeline
* fix codestyle issue
* revoke index_accounts_not_silenced because direct timeline does not use it.
* revoke index_accounts_not_silenced because direct timeline does not use it.
* fix rspec test condition.
* fix rspec test condition.
* fix rspec test condition.
* revoke adding column and partial index
* (direct timeline) move merging logic to model
* fix pagination parameter
* add method arguments that switches return array of status or cache_ids
* fix order by
* returns ActiveRecord.Relation in default behavor
* fix codestyle issue
