NXP-14989: reset current result layout columns on layout selection, and make sure 'currentResultLayoutColumns' field is not set when a binding is defined
NXP-14989: fix hardcoded re-render id on columns selection
NXP-14230: migrate content view ajax logics + make sure fancybox opens again in case of validation error
NXP-15399: hide slideshow when there is no content to show, and when document does not have the 'Picture' facet