Sendmail uses wrong encoding

[gertschi83]

Steps to reproduce
Change the default language to German and reset your password. You will receive an email where not every character is readable. At least Thunderbird shows "Passwort zurücksetzen anfordern" instead of "Passwort zurücksetzen anfordern".

Cause
The Content-Type is set to ISO-8859-1 instead of UTF-8.

Solution
Change the Content-Type header in the following files:

./modules/notification/helpers/notification.php
./modules/user/controllers/password.php
./modules/gallery/controllers/user_profile.php

The correct way to set the header is:

->header("Content-Type", "text/html; charset=UTF-8")

[bharat]

Fixed in ff1d8aea2f2805f85ce3cc7e4079d04fb9f1bac4