Fixing unsafe use of Thread.current variable :current_user

app/controllers/application_controller.rb

db/fixtures/development/09_issues.rb

db/fixtures/development/10_merge_requests.rb

features/support/env.rb

lib/api/helpers.rb

lib/api/issues.rb

lib/api/merge_requests.rb

lib/api/milestones.rb

lib/api/notes.rb

spec/models/project_spec.rb

spec/requests/api/issues_spec.rb

spec/requests/api/milestones_spec.rb

spec/requests/api/notes_spec.rb

spec/support/test_env.rb