Merge branch '1321-documentation-gestion-des-droits'

doc/source/_static/css/custom.css

doc/source/_static/js/custom.js

doc/source/administrator/index.rst

doc/source/administrator/rights/auth_token.md

doc/source/administrator/rights/data.md

doc/source/administrator/rights/group.md

doc/source/administrator/rights/index.rst

doc/source/administrator/rights/privilege.md

doc/source/administrator/rights/restriction.md

doc/source/conf.py

...administrator/rights/auth_token/add_modify_token_form.png

...ce/images/administrator/rights/auth_token/ajout_jeton.png

...e/images/administrator/rights/auth_token/ajout_widget.png

...images/administrator/rights/auth_token/auth_token_api.png

...ages/administrator/rights/auth_token/auth_token_jeton.png

...s/administrator/rights/auth_token/carte_appel_externe.png

...images/administrator/rights/auth_token/carte_datagrid.png

...ource/images/administrator/rights/auth_token/id_jeton.png

.../images/administrator/rights/auth_token/mode_publique.png

...rce/images/administrator/rights/auth_token/url_widget.png