Including scalable icons to improve size coverage

[Luya Tshimbalanga]

Martin Sourada wrote:
> Well, and that's not the only problems. Some of the svg icons aren't displayed
> at all (e.g. folder-remote) and some are displayed wrongly - see the attached
> selections from screen-shot. There is far more problems than that - these are
> just a quick random selection.
>   
The problem is from svg created with Adobe Illustrator.