Added sqlite db and email queue.

server/db/patches/001_add-email-queue-table.sql

@@ -0,0 +1,11 @@
+CREATE TABLE email_queue (
+    id INTEGER PRIMARY KEY ASC AUTOINCREMENT,
+    failures INTEGER NOT NULL,
+
+    sender VARCHAR(255) NOT NULL,
+    recipient VARCHAR(255) NOT NULL,
+    email VARCHAR(255) NOT NULL,
+    data TEXT NOT NULL,
+
+    updated_at DATETIME DEFAULT CURRENT_TIMESTAMP NOT NULL
+);