Errors after changing content type name

The variables content_type_facet_types and types in faceted_search_variables needs to be rebuilt after changing the machine-readable name of a content type.

I realize these aren't often changed, but in my case I had to do this so that I could sort search results by node type via Views. I renamed several content types so that they would appear in the client's desired order.

I didn't write a patch because I solved this by dropping the faceted_search* tables and reinstalling the module, although this didn't work until I had also removed the entries in the system table relating to this module, since until then the install script thought the tables had already been created.