Account archive download (#6460)

* Fix #201: Account archive download

* Export actor and private key in the archive

* Optimize BackupService

- Add conversation to cached associations of status, because
  somehow it was forgotten and is source of N+1 queries
- Explicitly call GC between batches of records being fetched
  (Model class allocations are the worst offender)
- Stream media files into the tar in 1MB chunks
  (Do not allocate media file (up to 8MB) as string into memory)
- Use #bytesize instead of #size to calculate file size for JSON
  (Fix FileOverflow error)
- Segment media into subfolders by status ID because apparently
  GIF-to-MP4 media are all named "media.mp4" for some reason

* Keep uniquely generated filename in Paperclip::GifTranscoder

* Ensure dumped files do not overwrite each other by maintaing directory partitions

* Give tar archives a good name

* Add scheduler to remove week-old backups

* Fix code style issue

1 files changed, 1 insertions, 0 deletions

diff --git a/Gemfile b/Gemfile
index ad1598af3..da5fc2f38 100644
--- a/Gemfile
+++ b/Gemfile
@@ -116,6 +116,7 @@ group :development do
   gem 'bullet', '~> 5.5'
   gem 'letter_opener', '~> 1.4'
   gem 'letter_opener_web', '~> 1.3'
+  gem 'memory_profiler'
   gem 'rubocop', require: false
   gem 'brakeman', '~> 4.0', require: false
   gem 'bundler-audit', '~> 0.6', require: false