[horizon] Unused xstatic-* projects retirement

Hi team, There are some xstatic packages which I didn't start to use in Horizon or plugins. We didn't do any release of them. During the last meeting [1] we agreed to mark them as retired. I'll start retired procedure [2] today. If you're going to use them, please let me know. The list of the projects to be retired: - xstatic-angular-ui-router - xstatic-bootstrap-datepicker - xstatic-hogan - xstatic-jquery-migrate - xstatic-jquery.quicksearch - xstatic-jquery.tablesorter - xstatic-rickshaw - xstatic-spin - xstatic-vis [1] http://eavesdrop.openstack.org/meetings/horizon/2019/horizon.2019-01-09-15.0... Regards, Ivan Kolodyazhny, http://blog.e0ne.info/