Upgrades

I’ve upgraded the theme (now it uses a non-hacked version of Regulus), the image gallery with the new Gallery v2.1, and also the new[ WPG]({{ site.url }}/wpg.galleryembedded.com) 2.0. Everything should work smoothly, according to the tests I made. Also, I added a direct link to the gallery, now that I found out how to do it properly.