Bug correction in settings page #manageBloc

Impossible to edit a folder or delete it. Small bug due to recent
changes in html.

Actually, I completely missed it but it was issue https://github.com/tmos/greeder/issues/62. I was a bit overbusy these late weeks and completely forgot about this bug, until today when I decided to edit a folder name in my Leed instance and got back to this bug :(

So, finally, here's the patch ! Should be working fine right now.