Update legacy and v3 styles

- removed wrap from legacy
- add :not([rowspan]) qualifier to wrap on v3.

themes/5ePhb.style.less

@@ -542,7 +542,7 @@ body {
 // *       CLASS TABLE
 // *****************************/
 .page .classTable{
-	th[colspan] {
+	th[colspan]:not([rowspan]) {
 		white-space : nowrap;
 	}
 	&.frame {

themes/5ePhbLegacy.style.less

@@ -408,9 +408,6 @@ body {
 	border-image-slice  : 150 200 150 200;
 	border-image-source : @frameBorderImage;
 	border-image-width  : 47px;
-	th[colspan] {
-		white-space : nowrap;
-	}
 	h5{
 		margin-bottom : 10px;
 	}