* Clean up reblog-tracking sets from FeedManager

Builds on #5419, with a few minor optimizations and cleanup of sets
after they are no longer needed.

* Update tests, fix multiply-reblogged case

Previously, we would have lost the fact that a given status was
reblogged if the displayed reblog of it was removed, now we don't.

Also added tests to make sure FeedManager#trim cleans up our reblog
tracking keys, fixed up FeedCleanupScheduler to use the right loop,
and fixed the test for it.

* Swedish file added

* Swedish file added

* Swedish file updated

* Swedish languagefile added

* Add Swedish translation

* Add Swedish translation

* Started the Swedish translation

* Added Swedish lang settings

* Updating Swedish language

* Updating Swedish language

* Updating Swedish language

* Updating Swedish language

* Updating Swedish language

* Updating Swedish language

* Swedish language completed and added

* Swedish language Simple_form added

* Swedish language Divise added

* Swedish language doorkeeper added

* Swedish language - now all file complete

* Update Dutch strings

* Update Dutch

* Keep references to all reblogs of a status on home feed

When inserting reblog: Add to set of reblogs of this status on
the feed, if original status was present in the feed, add it to
that set as well.

When removing a reblog: Remove it from that set. Take random
remaining item from the set. If one exists, re-insert it into feed,
otherwise do not re-insert anything.

Fix #4210

* When original is removed, toss out reblog references

Reported at
https://don.inux39.me/@inux39/1406082
https://don.inux39.me/@inux39/1406134

Fix #5398

Ordering the home timeline query by account_id meant that the first
100 items belonged to a single account. There was also no reason to
reverse-iterate over the statuses. Assuming the user accesses the
feed halfway-through, it's better to have recent statuses already
available at the top. Therefore working from newer->older is ideal.

If the algorithm ends up filtering all items out during last-mile
filtering, repeat again a page further. The algorithm terminates
when either at least one item has been added, or if the database
query returns nothing (end of data reached)

Possibly the cause of #5379, #5377

We've changed un-reblogging behavior when we implement Snowflake, to insert un-reblogged status at the position reblogging status existed.

However, our API expects home timeline is ordered by status ids, and max_id/since_id filters by zset score. Due to this, un-reblogged status appears as a last item of result set, and timeline expansion may skips many statuses.

So this reverts that change...reblogged status inserted at corresponding position to its id.

* chore: add Korean translation for client

* fix: change unlisted and embed Korean words

* Fix #5082 - disable retweet link for followers only toot

* Hide reblog count when it is a direct message

Signed-off-by: Marcin Mikołajczak <me@m4sk.in>

* Correction fem. form

* More dropdown title

* More dropdown title

* More dropdown title

* Add option to reduce motion (#5393)

* Enable ESLint rules import/*

* fix

* Add option to reduce motion

* Use HOC to wrap all Motion calls

* fix case-sensitive issue

* Avoid updating too frequently

* Get rid of unnecessary change to _simple_status.html.haml

Possibly the cause of #5379, #5377

* chore: add korean translation on ko.yml

* feat: add simple form korean translation up-to-date

* Update oc.json

* Update oc.yml

This allows deletion of reblogs which delivered before with OStatus URI.

* Add Catalan language

* Add Catalan language

* Update ca.json

* Update ca.json

* Update ca.json

* Update ca.json

* Update ca.json

* Update ca.json

* Update settings_helper.rb

* Update mastodon.js

* Update index.js

* Update application.rb

* Update ca.yml

* removed extra spaces at line 225

* Catalan translation update

added activerecord.ca.yml

* Update activerecord.ca.yml

Done

* Updated activerecord.ca.yml

* Catalan language updated

* Catalan language updated

* Catalan language updated

* Catalan language updated

* Catalan language updated

* Update ca.json

Removed :

<<<<<<< HEAD
  "getting_started.support": "{faq} • {userguide} • {apps}",
=======
>>>>>>> upstream/master

* Syncing to master

* Added new Catalan strings

* removed config.secret_key line

* Corrected <sotrong> tag to <strong>

Line 515

* Removed extra line

* Reverted

* yarn.lock reverted

* Updated Catalan strings

* Updated Catalan strings

* Fix #5351 - Redirection with page params after copy emoji

* Add page params to copy emoji link

* Close connection when succeeded posting

* Update webmock

Update French translation

* Correct some misspellings 

Remove some english language and put the proper french words in place.

* Forgot some shit

Buurps'

* Dutch strings: small change

* And this too.

The main change of this PR is removing `order by visibility` hack.

This was introduced to force using of `index_statuses_on_account_id` instead of PK index, but it seems no longer needed probably due to `index_statuses_on_account_id_id`. Removing this avoids reading all rows, so really improves first fetching of the user who has lot of statuses.

I have also changed JOIN to IN + subquery, which slightly faster in most cases.

This error occurred at least in development environment

- For some reason, :if option on before_action did not work. It got
  executed every time, returned false, and the action run anyway,
  which led to the current_sign_in_at and sign_in_count being
  updated on every request
- Return "do not filter" early in FeedManager#filter_from_home? if
  the status is authored by receiver. Usually this method is not
  called for own statuses at all, but it is called when Feed#get
  uses the database
- Return early if #reload_stale_associations! has nothing to load
  to save a database query with WHERE 1=0

* Do not try to guess why home timeline is empty in web UI

* Fix style issue