Backout "[entity,storage] remove hackish code from the bfss path The merge of the repo-side and web-side entity caches doesn't actually work, because entities have a _cw attribute which is sometimes a connection and sometimes a web request, and whose nature changes not-really-predictably whenever ResultSet.get_entity() is called and brings it out of the cache. This reverts commit 59a79300f213.

[system]
db-driver   = sqlite
adapter     = native
db-name     = tmpdb-multi
db-encoding = UTF-8