Tom, Jozef,
I have added the image styles integration. You can create a new i...

Tom, Jozef,

I have added the image styles integration. You can create a new image style and configure the logo to use it.

William,
I have removed the offending white-space.

Klaus,
1. I have removed the offending comment. Actually, the url that the menu function was creating was the new functionality itself. but it is incorrect now.

2. I have changed the permission to 'administer site configuration' which i felt was appropriate.

3. I am able to identify the logo because of a quirky behaviour of the hook. it returns blank when the logo url is being modified.