Replace old spinach step definitions with step.

features/steps/admin/active_tab.rb

features/steps/admin/groups.rb

features/steps/admin/logs.rb

features/steps/admin/projects.rb

features/steps/admin/users.rb

features/steps/dashboard/dashboard.rb

features/steps/dashboard/event_filters.rb

features/steps/dashboard/projects.rb

features/steps/dashboard/with_archived_projects.rb

features/steps/group/group.rb

features/steps/profile/active_tab.rb

features/steps/profile/emails.rb

features/steps/profile/ssh_keys.rb

features/steps/project/active_tab.rb

features/steps/project/archived.rb

features/steps/project/browse_commits.rb

features/steps/project/browse_commits_user_lookup.rb

features/steps/project/browse_git_repo.rb

features/steps/project/create.rb

features/steps/project/graph.rb