[repo] more efficient eid cache operations handling based on set_operation; refactor * split CleanupEidTypeCache operation into one operation for deleted eids and another for added eids, and put them in cw.server.hook * for consistency, move fti unindexing handling from the repository to the system source * handling of deleted eids is done in plan execution (ssplanner), no needs to redo it in *delete_info -> no more need for _prepare_delete_info method, killed

/* tables */
/*table.tablesorter {
	font-family:arial;
	background-color: #CDCDCD;
	margin:10px 0pt 15px;
	font-size: 8pt;
	width: 100%;
	text-align: left;
} */

table.listing tr .headerSortUp {
  background-image: url(asc.gif);
}
table.listing tr .headerSortDown {
  background-image: url(desc.gif);
}
table.listing tr .headerSortDown, table.listing tr .headerSortUp {
   background-color: #DDD;
   background-repeat: no-repeat;
   background-position: center right;
}