N°2618 DataModel viewer : fix no vertical scrollbar in MSIE

The scrollbar is present on the right side but after viewport limit so not visible !
Can't change div.ui-layout-pane.ui-layout-center width as it is calculated dynamically by JS Layout...
So added another container with a margin. The CSS rules are added to MSIE only using the media query tip :/

pages/schema.php

@@ -797,6 +797,8 @@ JS
 	}
 }
 
+
+
 /**
  * Display the details of a given class of objects
  *
@@ -808,6 +810,19 @@ JS
  */
 function DisplayClassDetails($oPage, $sClass, $sContext)
 {
+	$oPage->add('<div id="classDetailContainer">'); // MSIE compat (N°2618)
+	$oPage->add_style(<<<CSS
+@media screen and (-ms-high-contrast: active), (-ms-high-contrast: none) {
+	#classDetailContainer
+	{
+		overflow-y: scroll;
+		height: 100%;
+		margin-right: 30px;
+	}
+}
+CSS
+	);
+
 	DisplayClassHeader($oPage, $sClass);
 	$aParentClasses = array();
 	foreach (MetaModel::EnumParentClasses($sClass) as $sParentClass)
@@ -1014,6 +1029,8 @@ EOF
 
 	$oPage->SetCurrentTab();
 	$oPage->SetCurrentTabContainer();
+
+	$oPage->add('</div>');
 }