Tables: initial ФИО order, click-to-sort columns, substring search

- identity group detail (and thus every student list) is ordered by full name;
  defense rows on the group page sorted by name + lab number
- tablekit.js: click a header to sort (numeric-aware, ru locale), second click
  flips direction (▲/▼ indicator); search input with data-target filters rows
  by substring live
- tables wired: group matrix (with data-sort on variant cells), defense table
  (data-sort on status/date), students table, lab assignment lists per group,
  groups list and labs list; name/number columns pre-marked ascending
- non-sortable columns marked data-nosort (checkbox/actions)

services/identity-service/src/main/kotlin/ru/ysu/lms/identity/roster/GroupService.kt

@@ -222,7 +222,7 @@ class GroupService(
                 mustChangePassword = account.mustChangePassword,
                 tempPassword = account.tempPassword,
             )
-        }.sortedWith(Comparator { a, b -> studentNoComparator.compare(a.studentNo, b.studentNo) })
+        }.sortedWith(compareBy({ it.fullName.lowercase() }, { it.studentNo }))
         return GroupDetail(group.id.toString(), group.name, group.taskDurationMin, rows)
     }
 
@@ -264,17 +264,4 @@ class GroupService(
         studentCount = enrollments.countByGroup_Id(group.id),
         taskDurationMin = group.taskDurationMin,
     )
-
-    private companion object {
-        val studentNoComparator = Comparator<String> { a, b ->
-            val left = a.toIntOrNull()
-            val right = b.toIntOrNull()
-            when {
-                left != null && right != null -> left.compareTo(right)
-                left != null -> -1
-                right != null -> 1
-                else -> a.compareTo(b)
-            }
-        }
-    }
 }