Developments for report designer

	base_report_designer module allows you to create your own reports
	reports and images are stored in the database

	custom report may override base reports

RML modification
	You can now select to put the image in the RML instead than in a
	separate file

bzr revid: fp@tinyerp.com-0928aef6e14868d3cd6619d9d73031bfc5651ea2