fixes #4371: scope hovers on table rows to tbody

docs/assets/css/bootstrap.css

@@ -1863,8 +1863,8 @@ table {
   background-color: #f9f9f9;
 }
 
-.table-hover tr:hover td,
-.table-hover tr:hover th {
+.table-hover tbody tr:hover td,
+.table-hover tbody tr:hover th {
   background-color: #f5f5f5;
 }
 

less/tables.less

@@ -159,10 +159,12 @@ table {
 // ------------
 // Placed here since it has to come after the potential zebra striping
 .table-hover {
+  tbody {
     tr:hover td,
     tr:hover th {
       background-color: @tableBackgroundHover;
     }
+  }
 }