NXP-15052: Add thumbnail layout type
NXP-15219: simplify form template now that form does not need to be ajaxified anymore
NXP-14540: remove properties from layout type: default property values can already be set in conf, consistently with widget types configuration
NXP-15052: Adjust naming
NXP-15395: Rename document_listing_ajax to document_listing_table
NXP-15428: allow defining aliases for widgets and layouts definitions
NXP-15406: remove now useless content view templates, moved to compat module
NXP-15406: move content view templates to dedicated module
NXP-15435: Move virtual navigation templates to dedicated module
NXP-15406: cleanup
NXP-15406: replace content view actions by 'standard' actions contributions
NXP-15406: enhance action widget types management, handle more action properties + styling
NXP-15406/NXP-15134/NXP-14130: define boolean values for slideshow/spreadsheet/editColumns actions enablement on a content view result layout
NXP-15406: follow labels changes on slideshow/lightbox
NXP-15406: remove now useless content view action template, moved to compat module
NXP-15052: define aliases for new listing layout configuration + fix typo in layout type declaration
NXP-15052: rename contribution file for consistency with widgettypes-contrib declarations (well, mostly)