merge tedu upstream

Actually removing files from the fs during cleanup

it's possible for file xid to be blank, don't try to save it
from kuijsten

Fixing filepath collision

Merge tedu upstream

fixed!

only fetch once for a search

additional processing only for some activities

make a common.js file for some functions on all pages

Merge tedu upstream

try to update the docs

make it optional to collect forwards

backup code needs some more bludgeoning

confine the madness to backup code, and hardlink attachments

fix export to work with data stores

fix backup to work with various data stores

return err

don't refetch missing files

update blobdb schema

fatal if the blob.db is required and missing