Merge ~cjwatson/rutabaga:fix-migrate-db into rutabaga:master

[Colin Watson]

db: Don't fail migration if Token table already exists

The database migration handling in this project is very crude and needs to be entirely rewritten, but this should fix a problem that's blocking deployments for the moment.

[Jürgen Gmach (jugmac00)]

review: Approve

diff --git a/db/rutabaga.schema b/db/rutabaga.schema
index d7cdd77..7cd04ff 100644
--- a/db/rutabaga.schema
+++ b/db/rutabaga.schema
@@ -1,5 +1,5 @@
 BEGIN TRANSACTION;
-CREATE TABLE Token
+CREATE TABLE IF NOT EXISTS Token
 (
 id INTEGER PRIMARY KEY AUTOINCREMENT,
 secret VARCHAR(255),
@@ -7,4 +7,4 @@ username VARCHAR(255) UNIQUE,
 timestamp TEXT,
 valid INTEGER DEFAULT 1
 );
-COMMIT;
\ No newline at end of file
+COMMIT;