Bug 148761 Unable to copy a report item from template to report
Steps: 1. Create a template, add a Text item "t1" or others 2. Create template item using "t1" 3. Double click the template item and we get a report item again. 4. We copy the item, paste to another report file. Expected: the text item can be copied. Actual result: Nothing happened, not copied and no error msg.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/metadata/ElementDefn.java
* to elements that have that style (color, font, highlighting, etc.) A very few
 * apply to the style element itself (name, extends). To represent this, the
 * "shared" style properties are marked with an "isStyleProperty" attribute.
 * Anything so marked will associate with elements that have a style.
 * <p>
 * Other elements indicate if they have a style. In general, only the most base
 * element in a hierarchy sub-tree has this indication. All elements derived
 * from such an element also implicitly have a style. That is, a derived element
 * cannot "turn off" the style if one of its ancestors has a style. Let's use
 * the term <em>styled element</em> for one that has a style.
 * <p>
 * A styled element will present the style properties as though they were
 * properties of that element itself. This is done during the meta-data setup
 * process by copying each of the style properties from the style into the
 * styled element. The copy is done only for the most-base element in an element
 * type subtree that has a style. (Elements further down the tree automatically
 * inherit these properties in the normal way.) In practice, the implementation
 * copies a reference to the property, rather than the property itself.
 * <p>
 * However, styles have a wide range of properties, not all of which are
 * relevant to each element. Indeed, there are few elements that use all the
 * style properties. It would be confusing to the user to see a set of
 * irrelevant properties. Therefore, the meta-data file identifies the style
 * properties that are relevant to any given styled component. Only these are
 * copied from the style into the element type.
 * 
 * <h3>Containment</h3>
 * 
 * <em>Container</em> elements contain <em>content</em> elements. Some
 * containers store just one set of contents, others store multiple sets. Each