UI improvements

[zonca]

• duplicate some of the action links (e.g. pdf, bibtex) next to the article titles
• make the abstract "reveal" under articles if you click them, so you can browse through the papers without changing pages
• footer: thanks to FigShare for generous hosting of the proceedings of SciPy 2014.

[zonca]

Implemented these changes, see: http://scipy-conference.github.io/proceedings/2014/

Copied over also copyright statement from SciPy 2013 proceedings.

@stefanv @jaberg can you please check it out?

[stefanv]

Thanks, that looks great! (The abstract requires a bit of top-padding, but that's minor)

I will be away for the next week or so, so apologies if you don't hear from me much.

[zonca]

Thanks @stefanv I'm closing this, let's reopen if you or @jaberg find anything else.