Re-organized into two submodules: service and uploader.

Moved all the existing service code into the `service` submodule.

Stubbed out project and GUI frame for the uploader. Idea is to have a GUI that
infers all the correct meta-data from media tag values and creates service,
songs, and performance records appropriately based on the tagged mp3/ogg files
of the performances.

service/src/main/sql/20170209113258-add-song-sequence-down.sql

@@ -0,0 +1,5 @@
+-- # New Life Songs DB
+-- @author Jonathan Bernard <jdb@jdb-labs.com>
+--
+-- Remove performances.rank
+ALTER TABLE performances DROP COLUMN rank;