Merge branch '2.7' into 2.8

* 2.7:
  do not mock the session in token storage tests
  Add Occitan plural rule
  Disallow illegal characters like "." in session.name
  fix rounding from string

Author: fabpot

PluralizationRules.php

@@ -107,6 +107,7 @@ public static function get($number, $locale)
             case 'nl':
             case 'nn':
             case 'no':
+            case 'oc':
             case 'om':
             case 'or':
             case 'pa':