Add infinite scroll and masonry for search results view. Isolate mixins in include file.
Styles for search view. Isolate samlinger header in mixin. Provides request for asset view. New temporary header.
Merge pull request #5 from NationalMuseumofDenmark/SearchView#15202477

Search view#15202477
Merge pull request #6 from NationalMuseumofDenmark/master

Add frontend changes to search and headers