Set version to 0.5.0 stable

Author: jbtronics

icons/manifest.json

@@ -1,6 +1,6 @@
 {
 	"manifest_version": 2,
-	"version": "0.4.0",
+	"version": "0.5.0",
 	"name": "Part-DB",
     "default_locale": "de",
     "author": "Jan Böhmer",

inc/config_defaults.php

@@ -223,7 +223,7 @@
 
 // system version: this must be increased for every release(-candidate)!
 // IMPORTANT: please note that (for example) "0.3.0" is a HIGHER (!) version than "0.3.0.RC5".
-$config['system']['version']                            = '0.5.0.dev';  // examples: '0.2.2' or '0.2.2.RC2' (see SystemVersion.php)
+$config['system']['version']                            = '0.5.0';  // examples: '0.2.2' or '0.2.2.RC2' (see SystemVersion.php)
 
 // the version of the latest config style. Increase this for one if we need an update for the user's config.php (see also updates/config_update_steps.php)
 $config['system']['latest_config_version']              = 2; // only increase for one!