Implemented ClearableTextInput widget
Started implementing search for filtering list items
Added entity_field widget
Styling & layout improvements
Implemented widget instance enhancements for some sugar;
Added as_docs flag to search for working directly with the data;
Added try-catch clause around regexping the search term;
Added support for flags setting for the search regexp;
Added support for custom search term clean handler
Fixed, improved and enhanced searching in entities and nodes lists
Implemented styling to complement search behavior on #entities_list
Set input direction to RTL for now