[composite] apply composite on new enty too Before this changesets, automatic deletion did not applied to entity created in the same transaction. This patch remove this filtering in the dedicated operation. The original filtering where introduced by 5d889b4928bb but no rational where found for this changes. The former behavior is seen as inconsistent and creates bug in some cubes.

bgcolor = '#000000'
stylesheets = ['%s/cubicweb.css' % datadir_url]
logo = '%s/logo.png' % datadir_url
lazy = lazystr('%(bgcolor)s')