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/DatabaseVersionCommand.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 DatabaseVersionCommand extends BaseCommand
+{
+    protected function configure()
+    {
+        $this
+            ->setName('db:version')
+            ->setDescription('Show database schema version');
+    }
+
+    protected function execute(InputInterface $input, OutputInterface $output)
+    {
+        $output->writeln('<info>Current version: '.DatabaseProvider::getSchemaVersion($this->container['db']).'</info>');
+        $output->writeln('<info>Last version: '.\Schema\VERSION.'</info>');
+    }
+}