Remove now-redundant blog_tags
Remove now-redundant blog_tags

.transform(entry_list_lookup_related) does a similar thing, but more efficiently.

joshuajonah/feincms-elephantblog,matthiask/feincms-elephantblog,sbaechler/feincms-elephantblog,michaelkuty/feincms-elephantblog,matthiask/feincms-elephantblog,feincms/feincms-elephantblog,matthiask/feincms-elephantblog,joshuajonah/feincms-elephantblog,joshuajonah/feincms-elephantblog,feincms/feincms-elephantblog,michaelkuty/feincms-elephantblog,michaelkuty/feincms-elephantblog,sbaechler/feincms-elephantblog,sbaechler/feincms-elephantblog