Improving roles management

CHANGELOG.md

app/Resources/SonataAdminBundle/views/layout.html.twig

app/config/config_sonata.yml

app/config/security.yml

app/config/services.yml

...erBundle/Resources/views/Form/form_admin_fields.html.twig

.../Sonata/UserBundle/Security/CustomRoleSecurityHandler.php

...open/CoreBundle/Admin/ConfigurationContributionsAdmin.php

src/Biopen/CoreBundle/Admin/FeatureConfigurationAdmin.php

src/Biopen/CoreBundle/Admin/UserAdmin.php

src/Biopen/CoreBundle/Command/MigrationCommand.php

src/Biopen/CoreBundle/Document/FeatureConfiguration.php

src/Biopen/CoreBundle/Document/User.php

src/Biopen/CoreBundle/Resources/config/services_admin.yml

src/Biopen/CoreBundle/Resources/views/header.html.twig

src/Biopen/GeoDirectoryBundle/Admin/CategoryAdmin.php

src/Biopen/GeoDirectoryBundle/Admin/ImportAdmin.php

src/Biopen/GeoDirectoryBundle/Admin/OptionAdmin.php

...ectoryBundle/Controller/Admin/CategoryAdminController.php

...en/GeoDirectoryBundle/Resources/config/services_admin.yml