Html specs corrections grid

[TeyaVes]

targets: https://github.com/telerik/kendo-themes-private/issues/246

This PR targets the following items from the related issue:

Grid, TreeList
Items

• k-touch-action-none - add to groupable scenario and when dragging headers
  The k-grid-draggable-header class should be added to k-grid-header. It adds touch-action: none style to the header and thus, no k-touch-action-none utility class is needed for the th elements.
• k-grid-draggable-header - add to groupable/reorderable scenario
• k-grouping-dropclue - remove from template tests
• k-chip-label - add class to grid chips
• k-table-alt-row - check for consistent usage (reported for grid-with-grouping)
• k-virtual-content - (added when grid is scrollable) check if it can be removed
  it does not hold any styles and it seems to be obsolete
• k-height-container - (should not be used if grid is not scrollable) check if it can be removed in favor of a more modern CSS solution -
  Should be rendered only when virtualization is turned on. It is used to set the height for the scrollbar
• k-touch-action-auto - check usage, and remove from templates/tests where needed.
• k-selection-aggregates - should move outside the aria-root
• k-dropdown-list - (in grid pager) should be selected
  We won't be adding any state classes for the dropdownlist in the template of the Grid pager- the purpose of this template is to check the markup of the Grid, not the DropdownList
• k-treelist-group - check if it can be removed
• undefined - remove undefined class from templates - previously fixed
• k-editable - check if it can be removed
• check if k-drag-cell class can be removed from treelist header's empty cell
• GridHeaderCell component should render k-filterable when the menu is 'column'