Add config parameter to toggle automatic SQL migrations

- Add two command line opterations to show schema version
and to execute SQL migrations
- Add new configuration parameter to enable or disable
SQL migrations

app/Console/DatabaseMigrationCommand.php

@@ -0,0 +1,23 @@
+<?php
+
+namespace Kanboard\Console;
+
+use Kanboard\ServiceProvider\DatabaseProvider;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+
+class DatabaseMigrationCommand extends DatabaseVersionCommand
+{
+    protected function configure()
+    {
+        $this
+            ->setName('db:migrate')
+            ->setDescription('Execute SQL migrations');
+    }
+
+    protected function execute(InputInterface $input, OutputInterface $output)
+    {
+        parent::execute($input, $output);
+        DatabaseProvider::runMigrations($this->container['db']);
+    }
+}