Fixed all the confirm: deprecation warnings

app/views/admin/groups/index.html.haml

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

app/views/admin/hooks/index.html.haml

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

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

app/views/admin/users/_form.html.haml

app/views/admin/users/index.html.haml

app/views/dashboard/projects.html.haml

app/views/devise/registrations/edit.html.erb

app/views/groups/edit.html.haml

app/views/profiles/groups/index.html.haml

app/views/profiles/keys/_key.html.haml

app/views/profiles/keys/show.html.haml

app/views/profiles/show.html.haml

app/views/projects/deploy_keys/_deploy_key.html.haml

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

app/views/projects/edit.html.haml

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

app/views/projects/empty.html.haml

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