Widgets / Trigger onAfterStatus event.
Widgets / InsertMetadataPanel / Hide category when none available. Sort groups by label.
Widgets / Facet / Fix layout issue (#252).
Avoid root element not set error on subtemplates.
Subtemplate could not be sorted by title from the server side, do it on the client side by default.
Merge remote-tracking branch 'origin/develop' into develop