Add form-control class to save-modal textarea
Add form-control class to save-modal textarea

Add "Url: " label above textarea. The class makes the textarea look
more consistent.

stardust66/math3d,stardust66/math3d,ChristopherChudzicki/math3d,ChristopherChudzicki/math3d,ChristopherChudzicki/math3d,stardust66/math3d,stardust66/math3d,ChristopherChudzicki/math3d