Delete white filter and empty groups in SVGs

[Michael5601]

This PR fixes some icons related to the problems described in this issue issue.

I only deleted white filters and empty groups. Apparently empty groups in SVGs cause bugs when combined with SVG filter elements. I reported the issue to JSVG and it will soon be fixed. Until then we need to clean up the SVGs.

[BeckerWdf]

Thanks for the fixes...

[Michael5601]

Thanks for the fixes...

You're welcome! :)

[BeckerWdf]

So with empty groups you mean something like this:

 <g
    id="g4990"
    transform="translate(-36.649179,0.40625)" />

How did you delete it? With a text editor or with Inkscape? If inksacpe: How can one do this there?

[Michael5601]

So with empty groups you mean something like this:

 <g
    id="g4990"
    transform="translate(-36.649179,0.40625)" />

How did you delete it? With a text editor or with Inkscape? If inksacpe: How can one do this there?

yes exactly. I deleted them with Inkscape.
When you open the icon in inkscape you can see the layers and groups in the right window. Groups are represented as folders and you can just delete every empty folder.