cubicweb-inlinedit #2557395 fix open/close API uglyness [done]

see open_forw_wrapper vs close_form_wrapper: opening/closing tags in different methods obfuscates the code

instead, use proper templating & just have a wrap_form method

prioritynormal
typeenhancement
done in1.0.0
load0.500
load left0.000
closed by#81117ec94bbf [views/reledit] use cwtags to avoid nasty open/close internal api (closes #2557395)