Terminals and text editors on Linux isn't the most user friendly system. Here is a trick to easy copy from a web page and paste into nano or any other text editor on Linux.
The trick is to use a terminal that can handle it: MobaXterm, you can find it here http://mobaxterm.mobatek.net/ Along with it's SSH terminal you'll get VNC, RDP and a lot of other goodies. You may even edit files in MobaXterms own text editor.
Just right click to paste when you have nano up in the MobaXterm window.