new table: remote storage connection for accounts
save storage URL for remote storage
Some column cleanup.  Add accounts.new_post_in_river column.
Revert "save storage URL for remote storage"

This reverts commit d014f61a04fa08cf1b64c31a93549ddf9713f11b.
Revert "new table: remote storage connection for accounts"

This reverts commit f86e940901df9d442855cf82c95ff13c2a4ff969.
Revert "Revert "new table: remote storage connection for accounts""

This reverts commit beea16a2a93df95bf69baedd59e08cce9a9337cf.
Revert "Revert "save storage URL for remote storage""

This reverts commit 40dee35cf8ab41e22404bd6db494707a60501926.
Merge branch 'new-post-in-river'
make database host and password optional
new column to record the reason for retrying a job
delete remote storage connections when deleting account
extend valid post visibilities to include "tree"
Merge pull request #8 from Libertree/remotestorage

add table for remoteStorage connections
Merge branch 'master' into xmpp