load_from_file
  
  Description:
  public bool load_from_file (
string filename)
  
 
  
    Loads the layout from file with the given filename.
     This will set dirty to false.
    Parameters:
    
      
        | this | The layout item. | 
      
        | filename | The name of the file to load. | 
    
    Returns:
    
      
        | trueif this successfully loaded elsefalse
 |