Collapsible and collapsible set: Moving dependency on page from collapsibleset to collapsible to ensure that collapsible will be registered via the shimmed $.widget, so collapsibleset can make use of the initSelector.
Unprefixed transition property for .ui-slider-handle-snapping
Merge pull request #6353 from cpatik/patch-1

Unprefixed transition property for .ui-slider-handle-snapping
Filterable: Filter only direct children by default. Fixes #6354 - Filter does not filter <p> elements containing <table> correctly.
Filterable backcompat: Restrict application of filterPlaceholder to generated filter inputs. Fixes #6355 - Filterable: Placeholder on search input is overridden incorrectly
Integration tests: Filterable: Removing placeholder-related markup, because we do not test the placeholder handling - it is deprecated.
Integration tests: Filterable: Moving filter_core.js to filterable_core.js to stay in line with naming conventions.