Merge branch 'master' into permissions

- Added new core controller called Auth_Controller that extends FHC_Controller and manage the authentication
- All the controllers that were extending the CI_Controller now they extend the FHC_Controller
- All the controllers that were extending the FHC_Controller now they extend the Auth_Controller
- Added the method isAllowed to the FiltersLib to check if the authenticated user has the required permissions
- FilterWidget and controller Filters are using the method isAllowed from the FiltersLib

application/models/organisation/Geschaeftsjahr_model.php

@@ -21,7 +21,9 @@ class Geschaeftsjahr_model extends DB_Model
 		$query = 'SELECT *
 					FROM public.tbl_geschaeftsjahr
 					WHERE start <= now()
-					AND ende >= now()';
+					AND ende >= now()
+					ORDER BY start DESC
+					LIMIT 1';
 
 		return $this->execQuery($query);
 	}

application/models/organisation/Studienjahr_model.php

@@ -12,4 +12,21 @@ class Studienjahr_model extends DB_Model
 		$this->pk = 'studienjahr_kurzbz';
 		$this->hasSequence = false;
 	}
+
+	/**
+	 * Gets current Studienjahr, as determined by its start and enddate
+	 * @return array|null
+	 */
+	public function getCurrStudienjahr()
+	{
+		$query = 'SELECT *
+					FROM public.tbl_studienjahr
+					JOIN public.tbl_studiensemester using(studienjahr_kurzbz)
+					WHERE start <= now()
+					AND ende >= now()
+					ORDER by start DESC
+					LIMIT 1';
+
+		return $this->execQuery($query);
+	}
 }