Fix columns comments in the floating table header

Fix #13713
Close #15144

Signed-off-by: Maurício Meneghini Fauth <mauricio@fauth.dev>

ChangeLog

@@ -63,6 +63,7 @@ phpMyAdmin - ChangeLog
 - issue #15036 Fixed missing input fields checks for MaxSizeForInputField
 - issue #15119 Fixed uninterpreted HTML on Settings->Export page
 - issue #15159 Fixed missing query time and database in console
+- issue #13713 Fixed column comments in the floating table header
 
 4.8.5 (2019-01-25)
 - issue        Developer debug data was saved to the PHP error log

themes/original/css/common.css.php

@@ -2188,6 +2188,7 @@ fieldset .disabled-field td {
 }
 
 .pma_table th.draggable span,
+.sticky_columns th.draggable span,
 .pma_table tbody td span {
     display: block;
     overflow: hidden;

themes/pmahomme/css/common.css.php

@@ -2713,6 +2713,7 @@ fieldset .disabled-field td {
 }
 
 .pma_table th.draggable span,
+.sticky_columns th.draggable span,
 .pma_table tbody td span {
     display: block;
     overflow: hidden;