Remove corpora via Channels

See merge request !570

ML results deletion in Channels

See merge request !563

validate classification for a specific selection

See merge request !567

Turn pagination warnings into exceptions in unit tests

See merge request !561

Include the element with its children in ML stats

See merge request !572

Add ordering on ElementParents

See merge request !571

remove useless filter

See merge request !569

Corpus ML classes best count

See merge request !566

Remove roman dependency

See merge request !562

Support CORS_ORIGIN_REGEX_WHITELIST

See merge request !568

Raise 403 forbidden on corpus mixin

See merge request !564

Reindex via a Channels worker

See merge request !541

Class filter on ListElement{s,Parents,Children}

See merge request !558

Unpin cryptography

See merge request !560

Fix related elements type filter

See merge request !555

Fix unit test on classification selection

See merge request !559