Prepare release 1.0.0-beta3.

OEL-1450: Epic list pages.

OEL-1668: Update epic list pages.

OEL-1540: Fix Scrollspy js file requirement when there is no items to display.

OEL-1540: Using is empty instead of is null as condition to render content only or full inpage_navigation pattern.

OEL-1514: Improve list pages integration in whitelabel

OEL-1367: New Look & Feel for search form in search page and remove theming from block config form.

This is relevant if the form is called from another place, not from a block.

OEL-1367: Remove non-standard button fields. Set the input name in the configuration. Add a guard clause if input name is not set.

OEL-1367: Set the configuration in the submit, but add the region value to the form_state in validation.