Hotline#16456 change the way retrieving site images

See merge request !423

This avoid timeout when a search result contains a lot of
thumbnail's web-sites to download.

Hotline 6.52

See merge request !421

Dev #14885 renew result in modal popup

See merge request !420

Conflicts:
	library/ZendAfi/View/Helper/Accueil/Calendar.php
	tests/library/ZendAfi/View/Helper/Accueil/CalendarTest.php

Merge remote-tracking branch 'refs/remotes/afi/dev#12996_formation_ajout_zone_groupe_utilisateur' into afi-master

Conflicts:
	tests/application/modules/admin/controllers/CustomFieldsControllerTest.php
	tests/application/modules/admin/controllers/UserGroupControllerTest.php

Merge remote-tracking branch 'refs/remotes/afi/hotline_16358_fix_update_notice_cosmogramme' into afi-hotline_6.52

Conflicts:
	VERSIONS

admin: swap available and selected filters list

Hotline#16434 change ckeditor

See merge request !411

Conflicts:
	VERSIONS

Improve filters rendering in left column

add VERSIONS

add arrows to show filter can expand / collapse

filters title show selected value

dev #12996 : fix bug on custom field -> when model is not valid , custom field post values are reloaded in form

when changing filter, edit article button works

filters rendering refacto