Fix create table statements, multiple creates not allowed in one batch; closes #31.

server.js

@@ -42,7 +42,9 @@ db.serialize(function() {
                 "origJSON TEXT," +
                 "coreId TEXT," +
                 "status TEXT," +
-                "published_at TEXT) " +
+                "published_at TEXT)"
+        );
+        db.run(
             "CREATE TABLE Cores (" +
                 "coreId TEXT PRIMARY KEY," +
                 "coreName TEXT," +