Upgrade to 2.4.1

[duhast]

• use fancytree v. 2.4.1
• stylesheets converted to SCSS and does not use ERB anymore
• minimized and concatenated file versions removed in favor of asset pipeline
• skins are working

[lksv]

Thanks for your work.

I was used to update to a new version of fancytree by rake fancytree:update task. This stops to work with your change in app/assets/javascripts/fancytree/jquery.fancytree-all.js. I prefer to use this orginal file the same as fancytree's dist directory (e.g. the file which is officially provided by fancytree). I am not against sass. That's good idea. But could you please change the pull request to:

• keep orginal app/assets/javascripts/fancytree/jquery.fancytree-all.js
• keep rake fancytree:update working