Adding a bunch of tests

Gemfile

Gemfile.lock

app/helpers/application_helper.rb

app/models/account.rb

app/models/status.rb

app/models/stream_entry.rb

app/services/setup_local_account_service.rb

spec/fabricators/account_fabricator.rb

spec/fabricators/favourite_fabricator.rb

spec/fabricators/follow_fabricator.rb

spec/fabricators/status_fabricator.rb

spec/helpers/application_helper_spec.rb

spec/helpers/atom_helper_spec.rb

spec/helpers/home_helper_spec.rb

spec/helpers/profile_helper_spec.rb

spec/helpers/routing_helper.rb

spec/helpers/xrd_helper_spec.rb

spec/models/account_spec.rb

spec/models/favourite_spec.rb

spec/models/follow_spec.rb