rework edit registration form
rework edit registration form

(using bootstrap_form)
elgrillo83/cfb-hasenheide,cfb-hasenheide/cfb-hasenheide,elgrillo83/cfb-hasenheide,cfb-hasenheide/cfb-hasenheide,elgrillo83/cfb-hasenheide,cfb-hasenheide/cfb-hasenheide,elgrillo83/cfb-hasenheide,cfb-hasenheide/cfb-hasenheide