Remove ci_ prefix from all ci related things

app/controllers/admin/runner_projects_controller.rb

app/controllers/projects/builds_controller.rb

app/controllers/projects/runner_projects_controller.rb

app/controllers/projects/runners_controller.rb

app/controllers/projects/triggers_controller.rb

app/controllers/projects/variables_controller.rb

app/helpers/ci_status_helper.rb

app/models/ci/build.rb

app/models/ci/runner.rb

app/models/project.rb

app/models/user.rb

app/services/ci/create_commit_service.rb

app/services/create_commit_builds_service.rb

app/services/git_push_service.rb

app/services/git_tag_push_service.rb

app/views/admin/runners/show.html.haml

app/views/layouts/nav/_project.html.haml

app/views/projects/graphs/ci/_overall.haml

app/views/projects/runners/_runner.html.haml

app/views/projects/variables/show.html.haml