refactor feature steps

features/project/create_project.feature

features/project/wall.feature

features/steps/dashboard/dashboard.rb

features/steps/dashboard/dashboard_issues.rb

features/steps/dashboard/dashboard_merge_requests.rb

features/steps/dashboard/dashboard_search.rb

features/steps/profile/profile.rb

features/steps/profile/profile_ssh_keys.rb

features/steps/project/create_project.rb

features/steps/project/project.rb

features/steps/project/project_browse_branches.rb

features/steps/project/project_browse_commits.rb

features/steps/project/project_browse_files.rb

features/steps/project/project_browse_git_repo.rb

features/steps/project/project_browse_tags.rb

features/steps/project/project_comment_commit.rb

features/steps/project/project_issues.rb

features/steps/project/project_labels.rb

features/steps/project/project_merge_requests.rb

features/steps/project/project_milestones.rb