Move launcher code (hechoendrupal#3)

* Move DrupalConsole Launcher classes.

* Add InitCommand.

* Remove files.

* Keep/Restore original argv values.

* Inject application root to ConfigurationManager class.

* Add ListCommand class.

* Add loadConfiguration method.

* Add HelpCommand class.

* Add AboutCommand class.

* Update AboutCommand class.

* Update AboutCommand class.

* Add translation files.

* Update translator resources path.

* Pass directory to loadCoreLanguage.

* Pass core language path.

* Remove config directory.

Author: jmolivas

composer.json

@@ -41,6 +41,7 @@
         "symfony/console": "~2.8",
         "symfony/filesystem": "~2.8",
         "symfony/finder": "~2.8",
+        "symfony/process": "~2.8",
         "symfony/translation": "~2.8",
         "symfony/yaml": "~2.8"
     },