Make Pipeline view work

app/assets/stylesheets/framework/tables.scss

app/controllers/projects/pipelines_controller.rb

app/helpers/ci_status_helper.rb

app/helpers/gitlab_routing_helper.rb

app/models/ci/commit.rb

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

app/views/projects/ci/commits/_commit.html.haml

app/views/projects/ci_commits/_header_title.html.haml

app/views/projects/pipelines/_header_title.html.haml

app/views/projects/pipelines/index.html.haml

app/views/projects/pipelines/new.html.haml

spec/models/project_spec.rb