Glassmen are now Silverers

Today, Failbetter announced [1] that the profession known as "Glassman" will from now on be called "Silverer".

This means not only that all mentions of Glassmen on the wiki will have to be changed to refer to Silverers (I've started work on that) but that there will probably have to be an extensive rework of Categories.

I've refrained from deleting the "Category:Glassman" page so far since it seems a useful starting point for edits. I've already created "Category:Silverer" though. I'm unsure how to go on from here. I confess that the workings of "Categories" on this wiki have always been something of a mystery to me.