Submitting glpyh icon for opening something in a new window

[raquelbreternitz]

Designed in the Watson style (i.e., thin lines, curved edges).

I could also make a version that is more traditionally IDL style (sharp edges, thicker lines) and non-glyph versions if there's interest.

Thought I'd just go ahead and submit. :)
new_window.svg.zip

[seejamescode]

If you make it IDL style, I will get it published!