New Icon themes Added

I have added 3 more icon themes I made to my site. It's Midnight, Nebula and Cold Metal. If you want to see the complete list, head over at github to see them:

I'll take request for missing icons in my themes, just let me know and I'll fix it.

Also I'm working on updating "Shade of Z" icon theme and I'm building a new theme called "Retro Art".