Added the missing changes

plugins/password/localization/en_GB.inc

@@ -31,3 +31,4 @@ $messages['passwordweak'] = 'Password must include at least one number and one s
 $messages['passwordforbidden'] = 'Password contains forbidden characters.';
 $messages['firstloginchange'] = 'This is your first login. Please change your password.';
 $messages['disablednotice'] = 'The system is currently under maintenance and password change is not possible at the moment. Everything should be back to normal soon. We apologise for any inconvenience.';
+$messages['passwdinhistory'] = 'This password has already been used previously';

plugins/password/localization/en_US.inc

@@ -35,3 +35,4 @@ $messages['passwordweak'] = 'Password must include at least one number and one p
 $messages['passwordforbidden'] = 'Password contains forbidden characters.';
 $messages['firstloginchange'] = 'This is your first login. Please change your password.';
 $messages['disablednotice'] = 'The system is currently under maintenance and password change is not possible at the moment. Everything should be back to normal soon. We apologize for any inconvenience.';
+$messages['passwinhistory'] = 'This password has already been used previously';

plugins/password/localization/pl_PL.inc

@@ -31,3 +31,4 @@ $messages['passwordweak'] = 'Hasło musi zawierać co najmniej jedną cyfrę i z
 $messages['passwordforbidden'] = 'Hasło zawiera niedozwolone znaki.';
 $messages['firstloginchange'] = 'To jest twoje pierwsze logowanie. Proszę zmień hasło.';
 $messages['disablednotice'] = 'System jest w trakcie konserwacji i zmiana hasła w tym momencie nie jest możliwa. Wszystko powinno wrócić do normy w niedługim czasie. Przepraszamy za wszelkie niedogodności';
+$messages['passwdinhistory'] = 'To hasło było już użyte poprzednio.';

plugins/password/password.php

@@ -334,6 +334,9 @@ class password extends rcube_plugin
             case PASSWORD_CONNECT_ERROR:
                 $reason = $this->gettext('connecterror');
                 break;
+            case PASSWORD_IN_HISTORY:
+                $reason = $this->gettext('passwdinhistory');
+                break;
             case PASSWORD_ERROR:
             default:
                 $reason = $this->gettext('internalerror');