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/Cache/IPConfigCache.php

@@ -0,0 +1,70 @@
+<?php
+
+namespace Friendica\Core\Config\Cache;
+
+/**
+ * The interface for a user-specific config cache
+ */
+interface IPConfigCache
+{
+	/**
+	 * Tries to load the specified configuration array into the user specific config array.
+	 * Doesn't overwrite previously set values by default to prevent default config files to supersede DB Config.
+	 *
+	 * @param int   $uid
+	 * @param array $config
+	 */
+	function loadP($uid, array $config);
+
+	/**
+	 * Retrieves a value from the user config cache
+	 *
+	 * @param int    $uid     User Id
+	 * @param string $cat     Config category
+	 * @param string $key     Config key
+	 *
+	 * @return string The value of the config entry or '!<unset>!' if not set
+	 */
+	function getP($uid, $cat, $key = null);
+
+	/**
+	 * Sets a value in the user config cache
+	 *
+	 * Accepts raw output from the pconfig table
+	 *
+	 * @param int    $uid   User Id
+	 * @param string $cat   Config category
+	 * @param string $key   Config key
+	 * @param mixed  $value Value to set
+	 */
+	function setP($uid, $cat, $key, $value);
+
+	/**
+	 * Deletes a value from the user config cache
+	 *
+	 * @param int    $uid User Id
+	 * @param string $cat Config category
+	 * @param string $key Config key
+	 *
+	 * @return bool true, if deleted
+	 */
+	function deleteP($uid, $cat, $key);
+
+
+	/**
+	 * Checks if a value is set in the user config cache.
+	 *
+	 * @param int    $uid  User Id
+	 * @param string $cat  Config category
+	 * @param string $key  Config key
+	 * @return bool
+	 */
+	function hasP($uid, $cat, $key = null);
+
+	/**
+	 * Returns the whole configuration cache
+	 *
+	 * @return array
+	 */
+	function getAll();
+}