GLSL icons should be in SVG format

[tonihele]

GLSL icons should be in SVG format. For superior visual fidelity.

[tonihele]

And these also (taken from Netbeans...):

[grizeldi]

The original author of those icons was Ogli on the jme hub I believe. I haven't seen them post in years, so I assume the original files are lost to time and someone will need to re-create them.