fixes #4044: make z-index of tooltips same as fixed navbar so they overlay it if generated from within

docs/assets/css/bootstrap.css

@@ -4710,7 +4710,7 @@ input[type="submit"].btn.btn-mini {
 }
 
 .modal-open .tooltip {
-  z-index: 2070;
+  z-index: 2080;
 }
 
 .modal-backdrop {
@@ -4829,7 +4829,7 @@ input[type="submit"].btn.btn-mini {
 
 .tooltip {
   position: absolute;
-  z-index: 1020;
+  z-index: 1030;
   display: block;
   padding: 5px;
   font-size: 11px;

less/variables.less

@@ -125,7 +125,7 @@
 // Try to avoid customizing these :)
 @zindexDropdown:          1000;
 @zindexPopover:           1010;
-@zindexTooltip:           1020;
+@zindexTooltip:           1030;
 @zindexFixedNavbar:       1030;
 @zindexModalBackdrop:     1040;
 @zindexModal:             1050;