LPS-33282 Page sorting in navigation is an administrative change on a Site. It should require MANAGE_LAYOUTS permission
LPS-33282 Source Formatting - remove unnecessary import
LPS-31857 Page sorting is an administrative change on a site. It should require MANAGE_LAYOUTS permission
LPS-33282 source formatting
LPS-33282 Different conditions for updating and sorting layouts

1)The LayoutPermissionUtil.contains methods already include the SitesUtil.isLayoutUpdateable, SitesUtil.isLayoutDeletable checking. Therefore, the permission checking in the views is enough.
2)The concepts of updating and sorting a layout are different. The first refers to operations on the layout itself only, but the second affects to the priority of other layouts. Thus, they have to be handled differently.
3)Changes have been applied both to the navigation bar and to the layouts tree.
LPS-33282 Tab it so that we see that boolean sortable includes 2 checks. Otherwise, a quick glance may make a dev think that it's just 1 check with many parameters.
LPS-33282 Better tabbing as well
LPS-33282 Nate, how should this be sorted? Is this right?