Des simplifications de certains isset.

ecrire/action/cookie.php

ecrire/action/editer_article.php

ecrire/auth/ldap.php

ecrire/balise/formulaire_.php

ecrire/balise/url_logout.php

ecrire/base/connect_sql.php

ecrire/base/dump.php

ecrire/base/objets.php

ecrire/inc/auth.php

ecrire/inc/commencer_page.php

ecrire/inc/config.php

ecrire/inc/cvt_multietapes.php

ecrire/inc/distant.php

ecrire/inc/editer.php

ecrire/inc/filtres.php

ecrire/inc/filtres_ecrire.php

ecrire/inc/filtres_images_mini.php

ecrire/inc/filtres_mini.php

ecrire/index.php

ecrire/public.php