feature / UTable and UTableEntity components

• UTable component. Build's table with sticky header. Accepts data and columns config
• UTableEntity component. Extends UTable and add pagination, filters, sorts, by entityName or repository
• UDropdown and UDropdownItem component. Wrap element which passed as default slot and shows dropdown on click of this element
• Lookups util. Can load any entity and get it lookup value
• UBConfig property uiSettings.adminUI.vueEntityTables which replace all ext grids showList by UTableEntity component

Changed

• BREAKING removed UDetailGrid
• UDialog now exports errorReporter and it available in vue instance as $errorReporter
• UContextMenu - registered globally