Login page was enhanced.

	modified:   grails-app/views/login/auth.gsp
Style for login page was changed.

	modified:   web-app/css/login.css
Style for main pages was changed.

	modified:   web-app/css/main.css
The following two picts were added to the project.

	new file:   web-app/images/body-bg.png
	new file:   web-app/images/login-bg.png