Small tweak to category display

[kake]

I've made a small change to the way categories are displayed on RGL.

The Good Beer Guide categories were getting a little out of hand for certain pubs — we have data going back to 2007, so for a pub that had been in the GBG every year since then, there was a huge splurge of "Good Beer Guide, Good Beer Guide 2007, Good Beer Guide 2008, Good Beer Guide 2009, Good Beer Guide 2010, Good Beer Guide 2011, Good Beer Guide 2012" at the top of the page. This took up space and looked a bit ugly, so I have separated these categories out into their own line and made the display more compact.

You can see the results on, for example, Alma, SW18 1TF (not in the current GBG) and Dog And Bull, CR0 1RG (in all GBGs since we started collecting data). Coincidentally (or perhaps not), I implemented this new feature while sitting in the latter pub.

As always, please let me know if you see anything that seems to be going wrong with this.