Only show allocation if user has permission

prevents just a blank scetion in the details box if a sub user dosn't have the permission of `allocation.read`

Also fixes the server router where it was set to `allocations` and not `allocation` making it not showup period even if the sub user had the correct permissions.

resources/scripts/routers/ServerRouter.tsx

@@ -100,7 +100,7 @@ const ServerRouter = ({ match, location }: RouteComponentProps<{ id: string }>)
                                 <Can action={'backup.*'}>
                                     <NavLink to={`${match.url}/backups`}>Backups</NavLink>
                                 </Can>
-                                <Can action={'allocations.*'}>
+                                <Can action={'allocation.*'}>
                                     <NavLink to={`${match.url}/network`}>Network</NavLink>
                                 </Can>
                                 <Can action={'startup.*'}>