NXP-12109: correctly display the number of assets imported when using the bulk import. Use the same DamImport operation for both import, DnD and bulk
NXP-12089: Fix styles for asset containers
NXP-12089: Display div instead of tables to avoid specify a fixed width
NXP-12089: put correct filters on 'damSingleAssetVideo' action
NXP-12108: display an error message when a file cannot be imported in the selected folder through bulk import
NXP-12123: add missing 'video_file' and 'audio_file' layouts on edit mode. Use 'file' layout on view mode for Picture