Bug 209106 BIRT - User properties defined in a library are not seen in properties view
In the attached library there is a grid container. The text control and the row of the table in the grid have two user properties each. We can see them in the library but not when we drag them in to a design. The property does not show up in the properties view
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/core/DesignElement.java
* <dt><strong>Element type </strong></dt>
 * <dd>Inheritance only works between elements of the same type. One could say
 * that a derived element inherits the element type of the parent element. More
 * precisely, both the parent and derived elements have a type, and the
 * semantics of the application require that the element types be the same. It
 * is an error to extend an element of a different type.</dd>
 * 
 * <dt><strong>User-defined properties </strong></dt>
 * <dd>The user can define a custom property. All derived elements also have
 * that property.</dd>
 * 
 * <dt><strong>Custom behavior </strong></dt>
 * <dd>The user can define custom behavior by associating the element with a
 * Java class. Derived elements inherit this behavior.</dd>
 * </dl>
 * <p>
 * 
 * Inheritance does <em>not</em>, however, apply to the following:
 * <p>
 * <ul>
 * <li><strong>Name </strong>. A derived element does not inherit the name of
 * the parent component. If it did, then there would be two elements with the
 * same name, violating the rules about element name uniqueness.</li>
 * 
 * <li><strong>Parent element </strong>. A derived element necessarily has a
 * distinct value for the "extends" property than does its parent.</li>
 * </ul>
 * <p>
 * 
 * Members and classes in the inheritance system include: