Config FollowUp

- New Configuration (Config is now only holding the instance)
- New PConfiguration (PConfig is now only holding the instance)

- Config & PConfig-Adapter don't need "ConfigCache" anymore

- DB-Connection is now outside App->reload() for better dependency-chaining

src/Core/Config/Adapter/AbstractDbaConfigAdapter.php

@@ -0,0 +1,21 @@
+<?php
+
+namespace Friendica\Core\Config\Adapter;
+
+use Friendica\Database\DBA;
+
+abstract class AbstractDbaConfigAdapter
+{
+	/** @var bool */
+	protected $connected = true;
+
+	public function __construct()
+	{
+		$this->connected = DBA::connected();
+	}
+
+	public function isConnected()
+	{
+		return $this->connected;
+	}
+}