Strip tag and category IDs from gallery DB; full tag filtering.

The imagetags table in the gallery DB now uses tag and category names
directly instead of using lookup tables. Version bump to 1.

To do: Migrations for gallery schema.
Gallery DB migration.

timbre upgrade essential in order to not fail bizarrely with a readString
error when the ensure-db fn is initialized.
Merge branch 'collapse-tagcat'
Updates and TODOs.

* Latest versions of clj-aws-s3 and cheshire (untested)
* No need for predictable uberjar name now (rely on lein run)