[devtools] make CubiwebTC.login() context-manager restore the testcase connection on exit
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<title xml:lang="fr">Documentation du site</title>
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<title xml:lang="en">Standard use</title>
<title xml:lang="fr">Utilisation standard</title>
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<title xml:lang="fr">Utilisation des signets</title>
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<title xml:lang="fr">Recherche</title>
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<title xml:lang="fr">Préférences utilisateur</title>
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<title xml:lang="en">Add content to the site</title>
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<title xml:lang="fr">Tutoriel "Relation Query Language"</title>
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<title xml:lang="fr">A propos de ce site</title>
<title xml:lang="en">About this site</title>
</section>
</toc>