Some editors don't work, except code editor

[edgardozoppi]

Taking a look to the source code it looks like it supports a graphic editor js/gfx-editor.js for files with unknown extensions but it's not working for me.
Also I see that there is some kind of sound/music editor tracker, but I don't know how to use it. I mean, how can users access to that feature from the home page?

[SelvinPL]

gfx-editor should be fixed with #35

[ISSOtm]

Since #35 has been merged, @edgardozoppi can you check again, please?