shortQName(longQName) returns the shortQName equivalent of the
      specified longQName.
  
    Parameters
- longQName
- A string representing the longQName to convert to a shortQName.
Returns
Returns a string representing the shortQName equivalent of the specified longQName.
Example
<#assign result = shortQName("{http://www.alfresco.org/model/content/1.0}person")>      
<p>shortQName: ${result}</p>
      
      The preceding code snippet would produce output similar to the following:
shortQName: cm:person        
      
    