Added PHRASES translation for javascript

added:
. PhrasesLib.js: translate method for retreiving phrasentexte in users language with JS
. PhrasesLib.php: methods to retrieve data from Phrase_model and return as JSON
. Phrase_model: method to perform query for categories AND phrases-array AND language
. FHC-Header.php:
 -- included js lib
 -- generate global FHC_JS_PHRASES_STORAGE_OBJECT

Changes of other files: loading libs, inits,...

application/core/FHC_Controller.php

@@ -25,11 +25,11 @@ class FHC_Controller extends CI_Controller
 	 * NOTE: The library is loaded with the alias 'p', so must me used with this alias in the rest of the code.
 	 *		EX: $this->p->t(<category>, <phrase name>)
 	 */
-	public function loadPhrases($categories, $language = null)
+	protected function loadPhrases($categories, $language = null)
 	{
 		$this->load->library('PhrasesLib', array($categories, $language), 'p');
 	}
-
+	
 	/**
 	 * Sets the unique id for the called controller
 	 * NOTE: it is only working with HTTP GET request, not neeaded with POST