Supprime le paramètre `build_pdf_when_published` et désactive plus d'… #591

Job	Run time
Lint and build front-end	58s
Lint	32s
Build Sphinx documentation	50s
Install and test zds-site (zds.tutorialv2)	4m 33s
Install and test zds-site (zds.member zds.gallery zds.search zds.middlewares zds.pages)	2m 49s
Install and test zds-site (zds.forum zds.featured zds.mp zds.notification zds.utils)	4m 21s
Push coverage to Coveralls	11s
Push documentation to GitHub Pages	0s
	14m 14s

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