Merge branch 'master' into patch-4

Dockerfile

Gemfile

Gemfile.lock

Procfile

README.md

Vagrantfile

app/assets/images/background-photo.jpeg

app/controllers/accounts_controller.rb

app/controllers/stream_entries_controller.rb

app/lib/atom_serializer.rb

app/lib/tag_manager.rb

app/models/stream_entry.rb

app/services/after_block_service.rb

app/services/authorize_follow_service.rb

app/services/block_service.rb

app/services/concerns/stream_entry_renderer.rb

app/services/favourite_service.rb

app/services/follow_service.rb

app/services/reject_follow_service.rb

app/services/unblock_service.rb