Bug 152828 Add the projectFolder property on module
When user doesn't set the resource folder path in designer, there should be a default working path for Birt to manage the report design and find the related resources. A new property should be added on Module: name: projectFolder type:URL This property only can be given from the open design method from session but should not be set after the module initialized. Concern about the backward compatiblity issue, a new method will be added. Open design with a config argument.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/ModuleHandle.java
{
		CustomMsgCommand command = new CustomMsgCommand( getModule( ) );
		command.dropTranslation( resourceKey, locale );
	}
	/**
	 * Finds the position of the config variable with the given name.
	 * 
	 * @param name
	 *            the config variable name
	 * @return the index ( from 0 ) of config variable with the given name.
	 *         Return -1, if not found.
	 * 
	 */
	private int findConfigVariablePos( String name )
	{
		List configVars = (List) module.getLocalProperty( module,
				CONFIG_VARS_PROP );
		if ( configVars == null )
			return -1;
		int i = 0;
		for ( Iterator iter = configVars.iterator( ); iter.hasNext( ); i++ )
		{
			ConfigVariable var = (ConfigVariable) iter.next( );
			if ( var.getName( ).equals( name ) )
			{
				return i;
			}
		}
		return -1;
	}