Changes

tsk39: Integrates advanced pagination and search improvements for
stories
Refactors `StoryManagedBean` to use a reusable `Paginated` class, 
centralizing pagination logic. Enhances `search.xhtml` with dynamic page 
size, navigation controls, and updated search result display. Updates
`StoryService` to add counts for published and filtered stories,
alongside improved query logic. Adds and updates related tests.